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.
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