PowerColor Radeon HD 7770 1 GB

Introducing  PowerColor Radeon HD 7770 1 GB

Introduction

Launched amongst much fanfare earlier this year, It's now time for AMD's Graphics CoreNext architecture to get down to serious business: driving a mainstream GPU that offers killer value at price-points which most people will end up buying. AMD today launched the Radeon HD 7700 series, based on its spanking new silicon codenamed "Cape Verde".


What makes this launch a particularly monumental challenge for Graphics CoreNext is that it now has to deliver on its biggest design goal, that of being a more efficient number-cruncher than previous-generation VLIW architecture. This efficiency is supposed to show in relative performance per mm² (taking the new 28 nm fab process into account), performance per Watt, and in more layman terms, performance to stream processor count.

But first, a little history lesson. AMD addressed the sub-$200 market with its first DirectX 11 generation of GPUs using the Radeon HD 5700 series, based on the 40 nm "Juniper" silicon. Since the following HD 6000 series was also based on this process, and AMD had achieved higher performance targets with "Barts", it decided to reshuffle the higher-end lineup, give Barts the HD 6800 series, and since Juniper was the only GPU smaller than Barts, re-brand it to the HD 6700 series, to everyone's disgust including ours. With the transition to the new 28 nm fab process and a new number-chomping architecture, Graphics CoreNext, designing a new GPU became inevitable for AMD. Hence, Cape Verde. Products based on this chip, the Radeon HD 7770 and Radeon HD 7750, are touted to be true successors of the HD 6700 series.



We also have the following reviews for you today:

• AMD Radeon HD 7770 (reference design)
• HD 7750 & HD 7770 in CrossFire
• ASUS Radeon HD 7770 DirectCU Review (custom cooler & overclocked)
• HIS Radeon HD 7750 iCooler (custom cooler)
• MSI Radeon HD 7770 OC (custom cooler & overclocked)
• XFX Radeon HD 7770 Black Edition Super OC Review (custom cooler & overclocked)

Architecture

Cape Verde is a downscale from the "Tahiti" silicon, on which higher Radeon HD 7900 series parts are based. There are fewer number of redundant components, so Cape Verde is left functionally-identical to Tahiti, but is smaller, built for more affordable graphics cards. Cape Verde also retains the basic hierarchy of the architecture as implemented in Tahiti. A command processor takes input from the host machine, decodes them, and does the groundwork for the number-crunching area, the Graphics CoreNext clusters, which then perform all the shader and math-intensive processing. The Raster Operations area does the final leg of the processing, and the information is forwarded to the display logic. All components are interconnected to an L2 cache, that works as a very fast scratchpad for the GPU, and of course, the memory controllers.


Cape Verde has 10 Graphics CoreNext Computing Units (GCN CUs), which total up 640 stream processors. The chip has 40 TMUs, and 16 ROPs. It features a 128-bit wide GDDR5 memory interface, with which it communicates with 1 GB of memory. The chip retains the display logic of Tahiti, which lets you connect up to 6 displays in Eyefinity for productivity usage. The GPU also features PCI-Express Gen. 3.0 support, which increases bandwidth between it and the rest of the system. While we doubt the chip really needs 32 GB/s of system bandwidth, PCIe Gen 3.0 could come handy when connected in configurations with lower number of PCIe lanes (such as x8, x4, or even x1), as PCIe Gen 3.0 has more bandwidth per lane.


With the new HD 7000 series, AMD also introduced what it refers to as ZeroCore Technology. Simply put, this feature reduces power consumption of the GPU down to zero, by gating power to it, when the system is idling for extended periods of time, when the displays are blanked. In this power state, the graphics card draws less than 3W of power, making it extremely energy-efficient. The typical board power figures for the Radeon HD 7700 GPUs are also claimed by its makers to be extremely low.

PowerColor HD 7770 1 GB

PowerColor sent us a card that is pretty much identical to the AMD reference design. Only the cooler has undergone very minor changes on the outside. Its internals are the same as on the AMD board, clock speeds are also at reference design level.

Packaging

Contents

You will receive:

• Graphics card
• Driver CD + Documentation
• Analog VGA Adapter
• Mini-DP to DP Adapter

MSI Radeon HD 7770 OC 1 GB

Introducing MSI Radeon HD 7770 OC 1 GB

Introduction

Launched amongst much fanfare earlier this year, It's now time for AMD's Graphics CoreNext architecture to get down to serious business: driving a mainstream GPU that offers killer value at price-points which most people will end up buying. AMD today launched the Radeon HD 7700 series, based on its spanking new silicon codenamed "Cape Verde".


What makes this launch a particularly monumental challenge for Graphics CoreNext is that it now has to deliver on its biggest design goal, that of being a more efficient number-cruncher than previous-generation VLIW architecture. This efficiency is supposed to show in relative performance per mm² (taking the new 28 nm fab process into account), performance per Watt, and in more layman terms, performance to stream processor count.

But first, a little history lesson. AMD addressed the sub-$200 market with its first DirectX 11 generation of GPUs using the Radeon HD 5700 series, based on the 40 nm "Juniper" silicon. Since the following HD 6000 series was also based on this process, and AMD had achieved higher performance targets with "Barts", it decided to reshuffle the higher-end lineup, give Barts the HD 6800 series, and since Juniper was the only GPU smaller than Barts, re-brand it to the HD 6700 series, to everyone's disgust including ours. With the transition to the new 28 nm fab process and a new number-chomping architecture, Graphics CoreNext, designing a new GPU became inevitable for AMD. Hence, Cape Verde. Products based on this chip, the Radeon HD 7770 and Radeon HD 7750, are touted to be true successors of the HD 6700 series.



We also have the following reviews for you today:

• AMD Radeon HD 7770 (reference design)
• HD 7750 & HD 7770 in CrossFire
• ASUS Radeon HD 7770 DirectCU Review (custom cooler & overclocked)
• HIS Radeon HD 7750 iCooler (custom cooler)
• PowerColor Radeon HD 7770 (custom cooler)
• XFX Radeon HD 7770 Black Edition Super OC Review (custom cooler & overclocked)

Architecture

Cape Verde is a downscale from the "Tahiti" silicon, on which higher Radeon HD 7900 series parts are based. There are fewer number of redundant components, so Cape Verde is left functionally-identical to Tahiti, but is smaller, built for more affordable graphics cards. Cape Verde also retains the basic hierarchy of the architecture as implemented in Tahiti. A command processor takes input from the host machine, decodes them, and does the groundwork for the number-crunching area, the Graphics CoreNext clusters, which then perform all the shader and math-intensive processing. The Raster Operations area does the final leg of the processing, and the information is forwarded to the display logic. All components are interconnected to an L2 cache, that works as a very fast scratchpad for the GPU, and of course, the memory controllers.


Cape Verde has 10 Graphics CoreNext Computing Units (GCN CUs), which total up 640 stream processors. The chip has 40 TMUs, and 16 ROPs. It features a 128-bit wide GDDR5 memory interface, with which it communicates with 1 GB of memory. The chip retains the display logic of Tahiti, which lets you connect up to 6 displays in Eyefinity for productivity usage. The GPU also features PCI-Express Gen. 3.0 support, which increases bandwidth between it and the rest of the system. While we doubt the chip really needs 32 GB/s of system bandwidth, PCIe Gen 3.0 could come handy when connected in configurations with lower number of PCIe lanes (such as x8, x4, or even x1), as PCIe Gen 3.0 has more bandwidth per lane.


With the new HD 7000 series, AMD also introduced what it refers to as ZeroCore Technology. Simply put, this feature reduces power consumption of the GPU down to zero, by gating power to it, when the system is idling for extended periods of time, when the displays are blanked. In this power state, the graphics card draws less than 3W of power, making it extremely energy-efficient. The typical board power figures for the Radeon HD 7700 GPUs are also claimed by its makers to be extremely low.

MSI Radeon HD 7770 OC 1 GB

MSI has equipped their card with a new cooling solution that uses a dual fan design. In terms of clock speed we see a small bump, but not as big as on other overclocked cards today.

Packaging

Contents

You will receive:

• Graphics card
• Driver CD + Documentation
• PCI-Express Power Cable
• Mini-DP to DP Adapter

 

XFX HD 7770 Black Edition Super Overclock 1 GB

Introducing XFX HD 7770 Black Edition Super Overclock 1 GB

Introduction

Launched amongst much fanfare earlier this year, It's now time for AMD's Graphics CoreNext architecture to get down to serious business: driving a mainstream GPU that offers killer value at price-points which most people will end up buying. AMD today launched the Radeon HD 7700 series, based on its spanking new silicon codenamed "Cape Verde".


What makes this launch a particularly monumental challenge for Graphics CoreNext is that it now has to deliver on its biggest design goal, that of being a more efficient number-cruncher than previous-generation VLIW architecture. This efficiency is supposed to show in relative performance per mm² (taking the new 28 nm fab process into account), performance per Watt, and in more layman terms, performance to stream processor count.

But first, a little history lesson. AMD addressed the sub-$200 market with its first DirectX 11 generation of GPUs using the Radeon HD 5700 series, based on the 40 nm "Juniper" silicon. Since the following HD 6000 series was also based on this process, and AMD had achieved higher performance targets with "Barts", it decided to reshuffle the higher-end lineup, give Barts the HD 6800 series, and since Juniper was the only GPU smaller than Barts, re-brand it to the HD 6700 series, to everyone's disgust including ours. With the transition to the new 28 nm fab process and a new number-chomping architecture, Graphics CoreNext, designing a new GPU became inevitable for AMD. Hence, Cape Verde. Products based on this chip, the Radeon HD 7770 and Radeon HD 7750, are touted to be true successors of the HD 6700 series.



We also have the following reviews for you today:

• AMD Radeon HD 7770 (reference design)
• HD 7750 & HD 7770 in CrossFire
• ASUS Radeon HD 7770 DirectCU Review (custom cooler & overclocked)
• HIS Radeon HD 7750 iCooler (custom cooler)
• MSI Radeon HD 7770 OC (custom cooler & overclocked)
• PowerColor Radeon HD 7770 (custom cooler)

Architecture

Cape Verde is a downscale from the "Tahiti" silicon, on which higher Radeon HD 7900 series parts are based. There are fewer number of redundant components, so Cape Verde is left functionally-identical to Tahiti, but is smaller, built for more affordable graphics cards. Cape Verde also retains the basic hierarchy of the architecture as implemented in Tahiti. A command processor takes input from the host machine, decodes them, and does the groundwork for the number-crunching area, the Graphics CoreNext clusters, which then perform all the shader and math-intensive processing. The Raster Operations area does the final leg of the processing, and the information is forwarded to the display logic. All components are interconnected to an L2 cache, that works as a very fast scratchpad for the GPU, and of course, the memory controllers.


Cape Verde has 10 Graphics CoreNext Computing Units (GCN CUs), which total up 640 stream processors. The chip has 40 TMUs, and 16 ROPs. It features a 128-bit wide GDDR5 memory interface, with which it communicates with 1 GB of memory. The chip retains the display logic of Tahiti, which lets you connect up to 6 displays in Eyefinity for productivity usage. The GPU also features PCI-Express Gen. 3.0 support, which increases bandwidth between it and the rest of the system. While we doubt the chip really needs 32 GB/s of system bandwidth, PCIe Gen 3.0 could come handy when connected in configurations with lower number of PCIe lanes (such as x8, x4, or even x1), as PCIe Gen 3.0 has more bandwidth per lane.


With the new HD 7000 series, AMD also introduced what it refers to as ZeroCore Technology. Simply put, this feature reduces power consumption of the GPU down to zero, by gating power to it, when the system is idling for extended periods of time, when the displays are blanked. In this power state, the graphics card draws less than 3W of power, making it extremely energy-efficient. The typical board power figures for the Radeon HD 7700 GPUs are also claimed by its makers to be extremely low.

XFX HD 7770 Black Edition Super Overclock

XFX has done extensive cooling changes to their card. We see a similar cooler design as on the company's HD 7900 Series - just a smaller version. XFX has given their card the biggest clock increase of all HD 7770 cards reviewed today, but these changes come at a premium, the card will retail at $179.

AMD Radeon HD 7850 & HD 7870 2 GB

Introducing AMD Radeon HD 7850 & HD 7870 2 GB

"Next-generation", "Graphics CoreNext", "Radeon HD 7000 series", "Southern Islands"...this is it. AMD's new GPU architecture has moved into the phase where its makers launch serious money-making products based on it, with the Radeon HD 7800 series.


Targeting a wide price-range between $250-$350, the HD 7800 series falls into the market-segment both AMD and NVIDIA have known to refer to as the "sweetspot" segment. When people decide to turn their $400 Dell desktops into gaming PCs, instead of buying $300 game consoles for their TV, it's graphics cards from this segment that they end up buying. Smooth gameplay at full-HD resolution is a requisite.

AMD has to get several things right about the products it's launching today, because the competitiveness of the entire HD 7000 series hangs on its success. First, it needs to create a sizable performance jump, over the previous-generation Radeon HD 6800 series; second, its new chip has to prove Graphics CoreNext as being a viable investment for AMD by meeting some basic cost/performance, performance/die-area, and performance/Watt figures. VLIW4 had a very short stint before Graphics CoreNext.


NVIDIA hasn't even started with its next-generation GPU lineup, leaving its previous-generation to defend itself against a reinvigorated AMD lineup. AMD appears to have exploited this late-coming by NVIDIA. The launch prices of Radeon HD 7900 series resembled those of NVIDIA's high-end GTX series, the Radeon HD 7700 series products ask a couple of dozen Dollars too many. AMD kept the theme going with the Radeon HD 7800 series. You may recollect AMD's Radeon HD 6870 shipping for $240 on launch, and the HD 6850 for $180, both very attractive prices. The slide above is every indication of AMD trying to justify launch prices of $349 for the HD 7870 and $249 for the HD 7850, just because they are touted to outperform whatever NVIDIA currently has in those price-ranges (we're going to find that out in this review).

Architecture

The Radeon HD 7800 series consists of two models, the Radeon HD 7870, and the Radeon HD 7850, both stretched far apart in the market segment. The two are based on AMD's brand new GPU, codenamed "Pitcairn". Built on the 28 nm fabrication process, this new chip holds 2.8 billion transistors. "Pitcairn" is a 100% upscale of the "Cape Verde" silicon, on which the Radeon HD 7700 series is based. It has 1280 Graphics CoreNext stream processors, arranged in 20 Graphics CoreNext Compute Units (GCN CUs). The component hierachy of "Pitcairn" resembles that of "Tahiti", more than it does "Cape Verde". The 20 GCN CUs are arranged in two clusters, with two sets of geometry processing engines, and rasterizers, handing the initial stages of graphics processing.

Apart from 1280 stream processors, Pitcairn has 80 Texture Memory Units (TMUs), 32 ROPs (Raster Operations), and a 256-bit wide GDDR5 memory interface, holding 2 GB of memory. Here's something interesting. AMD deemed 2 GB as the new standard memory amount for performance-segment graphics cards. Both the HD 7870 and HD 7850 have 2 GB of memory, clocked at 1200 MHz (4.80 GHz GDDR5 effective), churning out 153.6 GB/s memory bandwidth. As for the core clock, the HD 7870 has its core clocked at 1000 MHz, making it AMD's second "GHz Edition" SKU after the HD 7770; while the HD 7850 has its core clocked at 860 MHz. The Radeon HD 7850 is carved out by disabling four GCN CUs, leaving 1024 stream processors, and 64 TMUs. The rest of the SKU is identical to the HD 7870.

In this review, we are evaluating both the Radeon HD 7870 and the Radeon HD 7850. Both cards are AMD reference design samples provided by the company.

ASUS Radeon HD 7750 1 GB

Introducing ASUS Radeon HD 7750 1 GB.

Two weeks ago AMD launched their Radeon HD 7700 Series. The cards use the all-new Cape Verde graphics processor which is based on AMD's new GCN Graphics Core Next architecture that promises increased performance and lower power draw.

Cape Verde is a downscale from the "Tahiti" silicon, on which higher Radeon HD 7900 series parts are based. There are fewer number of redundant components, so Cape Verde is left functionally-identical to Tahiti, but is smaller, built for more affordable graphics cards. Cape Verde also retains the basic hierarchy of the architecture as implemented in Tahiti.

The ASUS Radeon HD 7750 is a custom implementation of the HD 7750, using a custom heatsink and increased clock rates of 820 MHz GPU and 1150 MHz memory.

Packaging

Contents

You will receive:

• Graphics card
• Driver CD + Documentation
• Analog VGA Adapter

ASUS Radeon HD 7970 CrossFire

Introducing ASUS Radeon HD 7970

AMD's Radeon HD 7970 was successfully launched on December 22 last year as the fastest single GPU graphics card in the world. Until today only reviews of AMD cards were allowed, so today we bring you a review of the ASUS Radeon HD 7970 in multi GPU CrossFire mode.



Instead of just placing a simple sticker on their HD 7970, ASUS has decided to go with a little bit more effort. The company has put a 3D shaped metal "cap" on the middle section of the card, where usually an ATI red shines. As you can see from the picture above, the ASUS design looks mighty good and clearly improves the looks of the Raden HD 7970. Great job ASUS! For overclockers ASUS includes their own GPUTweak software which supports the HD 7970 for overclocking, voltage control and GPU information.

In terms of specs, the card comes at the same clock speeds as the AMD reference design, running at 925 MHz core and 1375 MHz memory. Pricing is unchanged too, $550 for a single card, twice that, $1100 for the dual card CrossFire combination we test in this review.

Test System

 Benchmark scores in other reviews are only comparable when exactly the same hardware & software configuration is used as in this review.

• All video card results were obtained on this exact system with the exact same configuration.
• All games were set to their highest quality setting unless indicated otherwise.
• AA and AF are applied via in-game settings, not via the driver's control panel.

Each benchmark was tested at the following settings and resolution:

• 1024 x 768, No Anti-aliasing. This is a standard resolution without demanding display settings.
• 1280 x 1024, 2x Anti-aliasing. Common resolution for most smaller flatscreens today (17" - 19"). A bit of eye candy turned on in the drivers.
• 1680 x 1050, 4x Anti-aliasing. Most common widescreen resolution on larger displays (19" - 22"). Very good looking driver graphics settings.
• 1920 x 1200, 4x Anti-aliasing. Typical widescreen resolution for large displays (22" - 26"). Very good looking driver graphics settings.
• 2560 x 1600, 4x Anti-aliasing. Highest possible resolution for commonly available displays (30"). Very good looking driver graphics settings.