Home GPU Comparison AMD Radeon HD 7970 X2 vs NVIDIA GeForce 9400 GT PCI

AMD Radeon HD 7970 X2 vs NVIDIA GeForce 9400 GT PCI

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7970 X2 and 256MB VRAM GeForce 9400 GT PCI 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 4 years late
More VRAM (3GB vs 256GB)
Larger VRAM bandwidth (264.0GB/s vs 12.80GB/s)
2032 additional rendering cores
NVIDIA GeForce 9400 GT PCI 's Advantages
Lower TDP (50W vs 500W)

Score

Benchmark

FP32 (float)
Radeon HD 7970 X2 +8320%
3.789 TFLOPS
GeForce 9400 GT PCI
0.045 TFLOPS
VS

Graphics Card

Aug 2012
Release Date
Aug 2008
Southern Islands
Generation
GeForce 9
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCI

Clock Speeds

-
-
-
-
-
-
1375 MHz
Memory Clock
400 MHz

Memory

3GB
Memory Size
256MB
GDDR5
Memory Type
DDR2
384bit
Memory Bus
128bit
264.0GB/s
Bandwidth
12.80GB/s

Render Config

32
Compute Units
-
-
SM Count
2
2048
Shading Units
16
128
TMUs
8
32
ROPs
4
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
-
768 KB
L2 Cache
32 KB
-
-
-

Theoretical Performance

29.60 GPixel/s
Pixel Rate
2.200 GPixel/s
118.4 GTexel/s
Texture Rate
4.400 GTexel/s
-
-
-
3.789 TFLOPS
FP32 (float)
44.80 GFLOPS
947.2 GFLOPS
FP64 (double)
-

Board Design

500W
TDP
50W
900 W
Suggested PSU
250 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 Processor

New Zealand
GPU Name
G96C
-
-
-
GCN 1.0
Architecture
Tesla
TSMC
Foundry
TSMC
28 nm
Process Size
55 nm
4.313 billion
Transistors
0.314 billion
352 mm²
Die Size
121 mm²

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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