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by techPowerUp! (Jul, 2011)In terms of clock speeds the card follows the frequencies set out by the HD 6870 reference design - just with two GPUs crammed onto a single PCB.
by techPowerUp! (Jul, 2011)Once we set 1.35 V the card managed to beat the 1000 MHz barrier, but temperatures were getting quite high.
Features Key features of the Radeon HD 6870 X2
memory bandwidth Rate at which data can be read from or stored in onboard memory
pixel rate Number of pixels a graphics card can render to the screen every second
texture rate Speed at which a graphics card can perform texture mapping
floating point performance How fast the gpu can crunch numbers
shading units Subcomponents of the gpu, these run in parallel to enable fast pixel shading
texture mapping units Built into each gpu, these resize and rotate bitmaps for texturing scenes
Reviews Word on the street for the Radeon HD 6870 X2
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What People Are Saying Give it to me straight
Applications
by techPowerUp! (Jul, 2011)During 3D gaming the card requires about the amount of power you would expect from a card in its performance class.
by techPowerUp! (Jul, 2011)Like all dual GPU designs the card suffers from increased power consumption in idle, multi-monitor and Blu-ray playback.
by techPowerUp! (Jul, 2011)In idle and during Blu-ray playback the card consumes massive amounts of power which is just not acceptable in the year 2011.
Performance
by techPowerUp! (Jul, 2011)Under load, noise levels are more in line with what other high-end accelerators offer today, actually below many of the high-end models.
by techPowerUp! (Jul, 2011)Whiel certainly not being quiet, under load the card emits acceptable noise levels when taking into account its performance class.
by techPowerUp! (Jul, 2011)When taking performance into account the card actually becomes the best price/performance card in the high-end segment, yet I would like to see lower pricing, definitely below $500 to make this card attractive to more buyers.
Memory
by techPowerUp! (Jul, 2011)HD 6870 X2 uses a Lucid PCI-Express bridge chip, fast Elpida memory and an excellent CPL PWM circuitry.
by techPowerUp! (Jul, 2011)The GDDR5 memory chips are made by Elpida, and carry the model number W1032BABG-50-F.
by techPowerUp! (Jul, 2011)Memory overclocking worked very well thanks to the Elpida GDDR5 memory which has amazing overclocking potential.
Gaming
by techPowerUp! (Jul, 2011)During 3D gaming, power consumption is reasonable.
Displays
by techPowerUp! (Jul, 2011)This approach enables the PowerColor HD 6870 X2 to end up being classified as high-end graphics card, delivering performance catered to 2560x1600 resolutions or multi-screen setups.
Specifications Full list of technical specs
gpu
| GPU brand | AMD |
|---|---|
| GPU name | Barts XT |
| Market | Desktop |
| Clock speed | 900 MHz |
| Is dual GPU | Yes |
| Reference card | None |
raw performance
| Shading units | 2,240 |
|---|---|
| Texture mapping units | 112 |
| Render output processors | 64 |
| Compute units | 28 |
| Pixel rate | 57.6 GPixel/s |
| Texture rate | 100.8 GTexel/s |
| Floating-point performance | 4,032 GFLOPS |
memory
| Memory clock speed | 1,050 MHz |
|---|---|
| Effective memory clock speed | 4,200 MHz |
| Memory bus | 512 bit |
| Memory | 2,048 MB |
| Memory type | GDDR5 |
| Memory bandwidth | 268.8 GB/s |
noise and power
| TDP | 300W |
|---|
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Compare
Competitors
 | Nvidia GeForce GTX 750 Ti
|
 | AMD Radeon HD 7850
|
 | Nvidia GeForce GTX 970
|
 | MSI Radeon HD 6870
|
 | Sapphire Radeon HD 6950
|
 | AMD Radeon HD 7970
|
 | Generic Radeon R9 280X
|
Other Radeon HD 6870 X2s
 | PowerColor Radeon HD 6870 X2
|
 | Club 3D Radeon HD 6870 X2
|
 | VTX3D Radeon HD 6870 X2
|
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