GeForce 8400 GS PCI vs Radeon HD 3870 X2
We compared two Desktop platform GPUs: 512MB VRAM GeForce 8400 GS PCI and 512MB VRAM Radeon HD 3870 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce 8400 GS PCI 's Advantages
Lower TDP (25W vs 165W)
Radeon HD 3870 X2 's Advantages
Larger VRAM bandwidth (57.66GB/s vs 5.328GB/s)
312 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce 8400 GS PCI
22
Radeon HD 3870 X2
+2300%
528
Graphics Card
Dec 2007
Release Date
Jan 2008
GeForce 8
Generation
Radeon R600
Desktop
Type
Desktop
PCI
Bus Interface
PCIe 2.0 x16
Clock Speeds
333 MHz
Memory Clock
901 MHz
Memory
512MB
Memory Size
512MB
DDR2
Memory Type
GDDR3
64bit
Memory Bus
256bit
5.328GB/s
Bandwidth
57.66GB/s
Render Config
-
Compute Units
4
1
SM Count
-
8
Shading Units
320
4
TMUs
16
4
ROPs
16
16 KB
L2 Cache
256 KB
Theoretical Performance
2.268 GPixel/s
Pixel Rate
13.20 GPixel/s
2.268 GTexel/s
Texture Rate
13.20 GTexel/s
22.40 GFLOPS
FP32 (float)
528.0 GFLOPS
-
FP64 (double)
105.6 GFLOPS
Board Design
25W
TDP
165W
200 W
Suggested PSU
450 W
1x S-Video
1x DMS-59
Outputs
2x DVI
1x S-Video
None
Power Connectors
1x 6-pin + 1x 8-pin
Graphics Processor
G98
GPU Name
R680
G98-400-U2
GPU Variant
R680 XT
(215-0708017)
Tesla
Architecture
TeraScale
TSMC
Foundry
TSMC
65 nm
Process Size
55 nm
0.21 billion
Transistors
0.666 billion
86 mm²
Die Size
192 mm²
Graphics Features
11.1 (10_0)
DirectX
10.1 (10_1)
3.3
OpenGL
3.3 (full)
4.0 (partial)
1.1
OpenCL
N/A
N/A
Vulkan
N/A
1.1
CUDA
-
4.0
Shader Model
4.1