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GPU Comparison
AMD Radeon HD 6790 vs ATI Radeon HD 2900 PRO
AMD Radeon HD 6790 vs ATI Radeon HD 2900 PRO
VS
AMD Radeon HD 6790
ATI Radeon HD 2900 PRO
We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6790 and 512MB VRAM Radeon HD 2900 PRO to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 6790 's Advantages
Released 3 years and 4 months late
More VRAM (1024GB vs 512GB)
Larger VRAM bandwidth (134.4GB/s vs 51.20GB/s)
480 additional rendering cores
Lower TDP (150W vs 200W)
Score
Benchmark
FP32 (float)
Radeon HD 6790
+250%
1.344 TFLOPS
Radeon HD 2900 PRO
0.384 TFLOPS
Radeon HD 6790
VS
Radeon HD 2900 PRO
Graphics Card
Apr 2011
Release Date
Dec 2007
Northern Islands
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 1.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1050 MHz
Memory Clock
800 MHz
Memory
1024MB
Memory Size
512MB
GDDR5
Memory Type
GDDR3
256bit
Memory Bus
256bit
134.4GB/s
Bandwidth
51.20GB/s
Render Config
-
SM Count
-
10
Compute Units
4
800
Shading Units
320
40
TMUs
16
16
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
8 KB (per CU)
L1 Cache
-
512 KB
L2 Cache
128 KB
Theoretical Performance
13.44 GPixel/s
Pixel Rate
9.600 GPixel/s
33.60 GTexel/s
Texture Rate
9.600 GTexel/s
-
FP16 (half)
-
1344 GFLOPS
FP32 (float)
384.0 GFLOPS
-
FP64 (double)
-
Graphics Processor
Barts
GPU Name
R600
Barts LE (215-0798002)
GPU Variant
R600 PRO (215RGMDKA13FG)
TeraScale 2
Architecture
TeraScale
TSMC
Foundry
TSMC
40 nm
Process Size
80 nm
1.7 billion
Transistors
0.72 billion
255 mm²
Die Size
420 mm²
Board Design
150W
TDP
200W
450 W
Suggested PSU
550 W
2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1
Outputs
2x DVI 1x S-Video
2x 6-pin
Power Connectors
1x 8-pin
Graphics Features
11.2 (11_0)
DirectX
10.0 (10_0)
4.4
OpenGL
3.3 (full) 4.0 (partial)
1.2
OpenCL
N/A
N/A
Vulkan
N/A
-
CUDA
-
5.0
Shader Model
4.0
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9
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