Review: ASUS Radeon HD 7870 DirectCU II Top

Published by Christian Ney on 20.04.12
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Technical data / specifications

  ASUS HD 7870 DirectCU II Top Radeon HD 7870 ASUS HD 7850 DirectCU II Top Radeon HD 6970
Chip Pitcairn XT Pitcairn XT Pitcairn Pro Cayman XT
Process 28 nm 28 nm 28 nm 40 nm
Transistors 2.8 billion 2.8 billion 2.8 billion 2.64 billion
GPU clock 1'100 MHz 1'000 MHz 975 MHz 880 MHz
Memory 2'048 MB GDDR5 2'048 MB GDDR5 2'048 MB GDDR5 2'048 MB GDDR5
Memory clock 1'250 MHz 1'200 MHz 1'250 MHz 1'375 MHz
Memory interface 256 Bit 256 Bit 256 Bit 256 Bit
Memory bandwidth 160'600 MB/s 153'600 MB/s 160'000 MB/s 176'000 MB/s
TMUs 80 80 64 96
TAUs 80 80 64 96
Shader Cores 1280 scalar 1280 scalar 1024 scalar 384 (4D) => 1536
ROPs 32 32 32 32
TDP   175 Watt   190 Watt




As you might expect the ASUS HD 7870 DirectCU II Top is everything but standard. First of all core clock speeds have been increased from 1'000 MHz to 1'100 MHz and the memory has also been overclocked but not that much - from 1'200 MHz to 1'250 MHz in fact. For factory overclocked cards ASUS uses "Top" in the name. Furthermore ASUS equipped this card with its own DirectCUII cooler. In this case they chose to go for the dual slot version. This cooler features two 80 millimeter fans as well as three heatpipes. Each of which has a diameter of six millimeters. In 2D mode the card is almost inaudible and under load it still is much quieter than AMDs reference design.

Meanwhile this time for the HD 7870 DirectCU II Top, ASUS didn't change the the power design nor even the PCB like they usually always do with this DirectCUII models. In this case this card features the reference card PCB from AMD followinf the axact same design, nothing as been changed.




Page 1 - Introduction Page 8 - Stone Giant
Page 2 - Technical Data / Specifications Page 9 - World in Conflict
Page 3 - Preview / Delivery Page 10 - Resident Evil 5
Page 4 - Testing conditions Page 11 - Call of Juarez
Page 5 - 3D Mark 11 Page 12 - Far Cry 2
Page 6 - 3D Mark Vantage Page 13 - Overclocking
Page 7 - Unigine Heaven Page 14 - Conclusion



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