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GPU Comparison
AMD Radeon HD 7970 X2 vs NVIDIA GeForce 8400 GS
AMD Radeon HD 7970 X2 vs NVIDIA GeForce 8400 GS
VS
AMD Radeon HD 7970 X2
NVIDIA GeForce 8400 GS
We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7970 X2 and 256MB VRAM GeForce 8400 GS to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7970 X2 's Advantages
Released 5 years and 4 months late
Larger VRAM bandwidth (264.0GB/s vs 6.400GB/s)
2032 additional rendering cores
NVIDIA GeForce 8400 GS 's Advantages
Lower TDP (40W vs 500W)
Score
Benchmark
FP32 (float)
Radeon HD 7970 X2
+12965%
3.789 TFLOPS
GeForce 8400 GS
0.029 TFLOPS
Radeon HD 7970 X2
VS
GeForce 8400 GS
Graphics Card
Aug 2012
Release Date
Apr 2007
Southern Islands
Generation
GeForce 8
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 1.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
1375 MHz
Memory Clock
400 MHz
Memory
3GB
Memory Size
256MB
GDDR5
Memory Type
DDR2
384bit
Memory Bus
64bit
264.0GB/s
Bandwidth
6.400GB/s
Render Config
-
SM Count
2
32
Compute Units
-
2048
Shading Units
16
128
TMUs
8
32
ROPs
4
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
-
768 KB
L2 Cache
16 KB
Theoretical Performance
29.60 GPixel/s
Pixel Rate
1.836 GPixel/s
118.4 GTexel/s
Texture Rate
3.672 GTexel/s
-
FP16 (half)
-
3.789 TFLOPS
FP32 (float)
29.38 GFLOPS
947.2 GFLOPS
FP64 (double)
-
Graphics Processor
New Zealand
GPU Name
G86
-
GPU Variant
G86-213-A2
GCN 1.0
Architecture
Tesla
TSMC
Foundry
TSMC
28 nm
Process Size
80 nm
4.313 billion
Transistors
0.21 billion
352 mm²
Die Size
127 mm²
Board Design
500W
TDP
40W
900 W
Suggested PSU
200 W
2x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
1x DVI 1x VGA 1x S-Video
3x 8-pin
Power Connectors
None
Graphics Features
12 (11_1)
DirectX
11.1 (10_0)
4.6
OpenGL
3.3
1.2
OpenCL
1.1
1.2
Vulkan
N/A
-
CUDA
1.1
5.1
Shader Model
4.0
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