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GPU Comparison
NVIDIA GeForce GTX 660 Rev. 2 vs NVIDIA GeForce 8400 GS
NVIDIA GeForce GTX 660 Rev. 2 vs NVIDIA GeForce 8400 GS
VS
NVIDIA GeForce GTX 660 Rev. 2
NVIDIA GeForce 8400 GS
We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Rev. 2 and 256MB VRAM GeForce 8400 GS to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GTX 660 Rev. 2 's Advantages
Released 7 years and 5 months late
Boost Clock1032MHz
Larger VRAM bandwidth (144.2GB/s vs 6.400GB/s)
944 additional rendering cores
NVIDIA GeForce 8400 GS 's Advantages
Lower TDP (40W vs 140W)
Score
Benchmark
FP32 (float)
GeForce GTX 660 Rev. 2
+6731%
1.981 TFLOPS
GeForce 8400 GS
0.029 TFLOPS
GeForce GTX 660 Rev. 2
VS
GeForce 8400 GS
Graphics Card
Sep 2014
Release Date
Apr 2007
GeForce 600
Generation
GeForce 8
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 1.0 x16
Clock Speeds
980 MHz
Base Clock
-
1032 MHz
Boost Clock
-
1502 MHz
Memory Clock
400 MHz
Memory
2GB
Memory Size
256MB
GDDR5
Memory Type
DDR2
192bit
Memory Bus
64bit
144.2GB/s
Bandwidth
6.400GB/s
Render Config
-
SM Count
2
-
Compute Units
-
960
Shading Units
16
80
TMUs
8
24
ROPs
4
-
Tensor Cores
-
-
RT Cores
-
16 KB (per SMX)
L1 Cache
-
384 KB
L2 Cache
16 KB
Theoretical Performance
20.64 GPixel/s
Pixel Rate
1.836 GPixel/s
82.56 GTexel/s
Texture Rate
3.672 GTexel/s
-
FP16 (half)
-
1.981 TFLOPS
FP32 (float)
29.38 GFLOPS
82.56 GFLOPS
FP64 (double)
-
Graphics Processor
GK104
GPU Name
G86
-
GPU Variant
G86-213-A2
Kepler
Architecture
Tesla
TSMC
Foundry
TSMC
28 nm
Process Size
80 nm
3.54 billion
Transistors
0.21 billion
294 mm²
Die Size
127 mm²
Board Design
140W
TDP
40W
300 W
Suggested PSU
200 W
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
1x DVI 1x VGA 1x S-Video
1x 6-pin
Power Connectors
None
Graphics Features
12 (11_0)
DirectX
11.1 (10_0)
4.6
OpenGL
3.3
3.0
OpenCL
1.1
1.1
Vulkan
N/A
3.0
CUDA
1.1
5.1
Shader Model
4.0
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