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GPU Comparison
AMD Radeon HD 7970 vs ATI Radeon HD 2900 GT
AMD Radeon HD 7970 vs ATI Radeon HD 2900 GT
VS
AMD Radeon HD 7970
ATI Radeon HD 2900 GT
We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7970 and 256MB VRAM Radeon HD 2900 GT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7970 's Advantages
Released 4 years and 1 months late
Larger VRAM bandwidth (264.0GB/s vs 51.20GB/s)
1808 additional rendering cores
ATI Radeon HD 2900 GT 's Advantages
Lower TDP (150W vs 250W)
Score
Benchmark
FP32 (float)
Radeon HD 7970
+1215%
3.789 TFLOPS
Radeon HD 2900 GT
0.288 TFLOPS
Radeon HD 7970
VS
Radeon HD 2900 GT
Graphics Card
Dec 2011
Release Date
Nov 2007
Southern Islands
Generation
Radeon R600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 1.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1375 MHz
Memory Clock
800 MHz
Memory
3GB
Memory Size
256MB
GDDR5
Memory Type
GDDR3
384bit
Memory Bus
256bit
264.0GB/s
Bandwidth
51.20GB/s
Render Config
-
SM Count
-
32
Compute Units
3
2048
Shading Units
240
128
TMUs
12
32
ROPs
12
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
-
768 KB
L2 Cache
128 KB
Theoretical Performance
29.60 GPixel/s
Pixel Rate
7.212 GPixel/s
118.4 GTexel/s
Texture Rate
7.212 GTexel/s
-
FP16 (half)
-
3.789 TFLOPS
FP32 (float)
288.5 GFLOPS
947.2 GFLOPS
FP64 (double)
-
Graphics Processor
Tahiti
GPU Name
R600
Tahiti XT (215-0821060)
GPU Variant
R600 GT (215RGFDKA13FG)
GCN 1.0
Architecture
TeraScale
TSMC
Foundry
TSMC
28 nm
Process Size
80 nm
4.313 billion
Transistors
0.72 billion
352 mm²
Die Size
420 mm²
Board Design
250W
TDP
150W
600 W
Suggested PSU
450 W
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
2x DVI 1x S-Video
1x 6-pin + 1x 8-pin
Power Connectors
1x 8-pin
Graphics Features
12 (11_1)
DirectX
10.0 (10_0)
4.6
OpenGL
3.3 (full) 4.0 (partial)
1.2
OpenCL
N/A
1.2
Vulkan
N/A
-
CUDA
-
5.1
Shader Model
4.0
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