GeForce 8400 GS PCI vs Radeon HD 4870 X2
We compared two Desktop platform GPUs: 512MB VRAM GeForce 8400 GS PCI and 1024MB VRAM Radeon HD 4870 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 286W)
Radeon HD 4870 X2 's Advantages
Released 8 months late
More VRAM (1024GB vs 512GB)
Larger VRAM bandwidth (115.2GB/s vs 5.328GB/s)
792 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce 8400 GS PCI
22
Radeon HD 4870 X2
+5354%
1200
Graphics Card
Dec 2007
Release Date
Aug 2008
GeForce 8
Generation
Radeon R700
Desktop
Type
Desktop
PCI
Bus Interface
PCIe 2.0 x16
Clock Speeds
333 MHz
Memory Clock
900 MHz
Memory
512MB
Memory Size
1024MB
DDR2
Memory Type
GDDR5
64bit
Memory Bus
256bit
5.328GB/s
Bandwidth
115.2GB/s
Render Config
-
Compute Units
10
1
SM Count
-
8
Shading Units
800
4
TMUs
40
4
ROPs
16
-
L1 Cache
16 KB (per CU)
16 KB
L2 Cache
256 KB
Theoretical Performance
2.268 GPixel/s
Pixel Rate
12.00 GPixel/s
2.268 GTexel/s
Texture Rate
30.00 GTexel/s
22.40 GFLOPS
FP32 (float)
1200 GFLOPS
-
FP64 (double)
240.0 GFLOPS
Board Design
25W
TDP
286W
200 W
Suggested PSU
600 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
R700
G98-400-U2
GPU Variant
R700 XT
(215-0669045)
Tesla
Architecture
TeraScale
TSMC
Foundry
TSMC
65 nm
Process Size
55 nm
0.21 billion
Transistors
0.956 billion
86 mm²
Die Size
256 mm²
Graphics Features
11.1 (10_0)
DirectX
10.1 (10_1)
3.3
OpenGL
3.3
1.1
OpenCL
1.1
N/A
Vulkan
N/A
1.1
CUDA
-
4.0
Shader Model
4.1
