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GPU Comparison
AMD Radeon HD 7870 XT vs NVIDIA GeForce 8400 GS PCI Rev. 2
AMD Radeon HD 7870 XT vs NVIDIA GeForce 8400 GS PCI Rev. 2
VS
AMD Radeon HD 7870 XT
NVIDIA GeForce 8400 GS PCI Rev. 2
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 7870 XT and 512MB VRAM GeForce 8400 GS PCI Rev. 2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 7870 XT 's Advantages
Released 5 years and 7 months late
Boost Clock975MHz
Larger VRAM bandwidth (192.0GB/s vs 8.000GB/s)
1520 additional rendering cores
NVIDIA GeForce 8400 GS PCI Rev. 2 's Advantages
Lower TDP (40W vs 185W)
Score
Benchmark
FP32 (float)
Radeon HD 7870 XT
+7579%
2.995 TFLOPS
GeForce 8400 GS PCI Rev. 2
0.039 TFLOPS
Radeon HD 7870 XT
VS
GeForce 8400 GS PCI Rev. 2
Graphics Card
Nov 2012
Release Date
Apr 2007
Southern Islands
Generation
GeForce 8
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCI
Clock Speeds
925 MHz
Base Clock
-
975 MHz
Boost Clock
-
1500 MHz
Memory Clock
500 MHz
Memory
2GB
Memory Size
512MB
GDDR5
Memory Type
DDR3
256bit
Memory Bus
64bit
192.0GB/s
Bandwidth
8.000GB/s
Render Config
-
SM Count
2
24
Compute Units
-
1536
Shading Units
16
96
TMUs
8
32
ROPs
4
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
-
512 KB
L2 Cache
32 KB
Theoretical Performance
31.20 GPixel/s
Pixel Rate
2.080 GPixel/s
93.60 GTexel/s
Texture Rate
4.160 GTexel/s
-
FP16 (half)
-
2.995 TFLOPS
FP32 (float)
39.36 GFLOPS
748.8 GFLOPS
FP64 (double)
-
Graphics Processor
Tahiti
GPU Name
GT218
Tahiti LE (215-0821122)
GPU Variant
-
GCN 1.0
Architecture
Tesla 2.0
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
4.313 billion
Transistors
0.26 billion
352 mm²
Die Size
57 mm²
Board Design
185W
TDP
40W
450 W
Suggested PSU
200 W
1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2
Outputs
1x DVI 1x HDMI 1x VGA
2x 6-pin
Power Connectors
None
Graphics Features
12 (11_1)
DirectX
11.1 (10_1)
4.6
OpenGL
3.3
1.2
OpenCL
1.1
1.2
Vulkan
N/A
-
CUDA
1.2
5.1
Shader Model
4.1
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