PowerColor HD 6870 PCS+ 1 GB Review 9

PowerColor HD 6870 PCS+ 1 GB Review

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Last month, AMD, which pioneered DirectX 11 compliant PC consumer graphics, released its second-generation Radeon HD 6800 DirectX 11 architecture, codenamed Northern Islands. The company has enjoyed a 6 month head-start into the race for DirectX 11 graphics hardware market dominance, which also reflected in both growth of market-share, and domination in sales. The time passed by also allowed AMD to refine and fine-tune its architecture to better suit the existing 40 nm silicon fabrication process, by promising to churn out higher performance per Watt and performance per mm² of die-area (plays an important role in product pricing), compared to the previous-generation Evergreen architecture.

PowerColor's HD 6870 PCS+ is a custom HD 6870 design. It uses a different component selection on a very-close-to-reference PCB and changes the thermal solution compared to the AMD reference version. The most important points for the HD 6870 PCS+ are a clock speed of 940 MHz core and 1100 MHz memory, which is around 4.5% more on both core and memory.

HD 5770
GTX 460
GTX 460
HD 6850
HD 5850
GTX 470
HD 6870
PCS+ HD 6870
HD 5870
GTX 480
HD 5970
Shader units 80033633696014404481120112016004802x 1600
ROPs162432323240323232482x 32
GPUJuniperGF104GF104BartsCypressGF100BartsBartsCypressGF1002x Cypress
Transistors1040M1950M1950M1700M2154M3200M1700M1700M2154M3200M2x 2154M
Memory Size1024 MB 768 MB1024 MB1024 MB1024 MB1280 MB1024 MB1024 MB1024 MB1536 MB2x 1024 MB
Memory Bus Width 128 bit 192 bit 256 bit 256 bit 256 bit 320 bit 256 bit 256 bit 256 bit 384 bit 2x 256 bit
Core Clock850 MHz 675 MHz 675 MHz 775 MHz 725 MHz 607 MHz 900 MHz 940 MHz 850 MHz 700 MHz 725 MHz
Memory Clock1200 MHz 900 MHz 900 MHz 1000 MHz 1000 MHz 837 MHz 1050 MHz 1100 MHz 1200 MHz 924 MHz 1000 MHz
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