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Sapphire HD7870 FleX Edition Review

Rating: 9.0.

We have reviewed all of the Sapphire FleX graphics cards to date, and today we are looking at the new HD7870 FleX Edition, slotting in just below the HD7970 Dual-X FleX Edition, which we reviewed at the beginning of June. The HD7870 FleX ships with a modest factory overclock, dual fans and custom ‘FleX' display technology only available with Sapphire discrete solutions.

This year Sapphire have produced a wide range of 7000 series cards sporting dual fan coolers, with a primary focus on lowering noise levels. Thanks to the use of high quality fans and clever non aggressive fan profiles these have been an ideal choice for many enthusiast users.

Product Sapphire HD7870 FleX Edition AMD HD7950 AMD HD7870 AMD HD7850
Core Clock speed 1050mhz 800mhz 1000mhz 860mhz
Transistors 2.8B 4.31B 2.8B 2.8B
Stream Processors 1,280 1,792 1,280 1,024
Compute Performance 2.56 TFLOPS 2.87 TFLOPS 2.56 TFLOPS 1.76 TFLOPS
Texture Units 80 112 80 64
Texture Fillrate 80 GT/s 89.6 GT/s 80 GT/s 55.0 GT/s
ROPs 32 32 32 32
Pixel Fillrate 32.0 GP/s 25.6 GP/s 32.0 GP/s 27.52 GP/s
Z/Stencil 128 128 128 128
Memory Clock 1,250mhz 1,250mhz 1,200mhz 1,200mhz
Memory Data Rate 5.0 Gbps 5.0 Gbps 4.8 Gbps 4.8 Gbps
Memory Bandwidth 153.6 GB/s 240 GB/s 153.6 GB/s 153.6 GB/s

The Sapphire HD7980 Flex Edition receives both a core clock and memory increase. The core speed has been enhanced by 50mhz, from 1,000mhz to 1,050 mhz. The memory speed has been boosted by 50mhz from 1,200mhz (4.8 Gbps effective) to 1,250mhz (5Gbps effective).

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