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Sapphire HD7870 Overclock Edition Review

Rating: 8.0.

Last week we reviewed the overclocked XFX HD7870 Black Edition graphics card, and today we look at the Sapphire HD7870 Overclock Edition. This card features a custom cooler, with twin fans and overclocked out of the box settings to appeal to the enthusiast audience.

Sapphire discrete video cards have scored well on Kitguru in recent months, and with good reason. Their coolers are the best on the market, even outperforming solutions from XFX. The combination of low noise levels and excellent cooling proficiency ensure class leading performance.

Product AMD HD7970 AMD HD7950 Sapphire HD7870 Overclock Edition
AMD HD7850
Core Clock speed 925mhz 800mhz 1000mhz (1,050mhz) 860mhz
Transistors 4.31 billion 4.31 billion 2.8 billion 2.8 billion
Stream Processors 2,048 1,792 1,280 1,024
Compute Performance 3.79 TFLOPS 2.87 TFLOPS 2.56 TFLOPS 1.76 TFLOPS
Texture Units 128 112 80 64
Texture Fillrate 118.4 GT/s 89.6 GT/s 80 GT/s 55.0 GT/s
ROPs 32 32 32 32
Pixel Fillrate 29.6 GP/s 25.6 GP/s 32.0 GP/s 27.52 GP/s
Z/Stencil 128 128 128 128
Memory Clock 1,375mhz 1,250mhz 1,200mhz (1,250mhz) 1,200mhz
Memory Data Rate 5.5 GBps 5.0 Gbps 4.8 Gbps (5.0Gbps) 4.8 Gbps
Memory Bandwidth 264 GB/s 240 GB/s 153.6 GB/s 153.6 GB/s

Sapphire have opted for the same modest overclock as XFX – that being 50mhz on the core, from 1,200mhz to 1,250mhz. The GDDR5 memory also receives a 50mhz clock increase to 1,250mhz (5.0Gbps effective). The Gigabyte HD7870 Overclock Edition that we reviewed a short while ago received a 100mhz overclock to 1,100mhz on the core, but didn’t have a memory boost at all.

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