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GPU Comparison
AMD Radeon HD 7870 GHz Edition vs NVIDIA GeForce 8400 GS
AMD Radeon HD 7870 GHz Edition vs NVIDIA GeForce 8400 GS
VS
AMD Radeon HD 7870 GHz Edition
NVIDIA GeForce 8400 GS
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 GHz Edition 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 7870 GHz Edition 's Advantages
Released 4 years and 11 months late
Larger VRAM bandwidth (153.6GB/s vs 6.400GB/s)
1264 additional rendering cores
NVIDIA GeForce 8400 GS 's Advantages
Lower TDP (40W vs 175W)
Score
Benchmark
FP32 (float)
Radeon HD 7870 GHz Edition
+8727%
2.56 TFLOPS
GeForce 8400 GS
0.029 TFLOPS
Radeon HD 7870 GHz Edition
VS
GeForce 8400 GS
Graphics Card
Mar 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
-
1200 MHz
Memory Clock
400 MHz
Memory
2GB
Memory Size
256MB
GDDR5
Memory Type
DDR2
256bit
Memory Bus
64bit
153.6GB/s
Bandwidth
6.400GB/s
Render Config
-
SM Count
2
20
Compute Units
-
1280
Shading Units
16
80
TMUs
8
32
ROPs
4
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
-
512 KB
L2 Cache
16 KB
Theoretical Performance
32.00 GPixel/s
Pixel Rate
1.836 GPixel/s
80.00 GTexel/s
Texture Rate
3.672 GTexel/s
-
FP16 (half)
-
2.560 TFLOPS
FP32 (float)
29.38 GFLOPS
160.0 GFLOPS
FP64 (double)
-
Graphics Processor
Pitcairn
GPU Name
G86
Pitcairn XT (215-0828047)
GPU Variant
G86-213-A2
GCN 1.0
Architecture
Tesla
TSMC
Foundry
TSMC
28 nm
Process Size
80 nm
2.8 billion
Transistors
0.21 billion
212 mm²
Die Size
127 mm²
Board Design
175W
TDP
40W
450 W
Suggested PSU
200 W
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
1x DVI 1x VGA 1x S-Video
2x 6-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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