GeForce 8400 GS PCI vs GeForce GTX 660
We compared two Desktop platform GPUs: 512MB VRAM GeForce 8400 GS PCI and 2GB VRAM GeForce GTX 660 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 140W)
GeForce GTX 660 's Advantages
Released 4 years and 9 months late
Boost Clock1032MHz
More VRAM (2GB vs 512GB)
Larger VRAM bandwidth (144.2GB/s vs 5.328GB/s)
952 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce 8400 GS PCI
22
GeForce GTX 660
+8904%
1981
Graphics Card
Dec 2007
Release Date
Sep 2012
GeForce 8
Generation
GeForce 600
Desktop
Type
Desktop
PCI
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
980 MHz
-
Boost Clock
1032 MHz
333 MHz
Memory Clock
1502 MHz
Memory
512MB
Memory Size
2GB
DDR2
Memory Type
GDDR5
64bit
Memory Bus
192bit
5.328GB/s
Bandwidth
144.2GB/s
Render Config
1
SM Count
-
8
Shading Units
960
4
TMUs
80
4
ROPs
24
-
L1 Cache
16 KB (per SMX)
16 KB
L2 Cache
384 KB
Theoretical Performance
2.268 GPixel/s
Pixel Rate
20.64 GPixel/s
2.268 GTexel/s
Texture Rate
82.56 GTexel/s
22.40 GFLOPS
FP32 (float)
1.981 TFLOPS
-
FP64 (double)
82.56 GFLOPS
Board Design
25W
TDP
140W
200 W
Suggested PSU
300 W
1x S-Video
1x DMS-59
Outputs
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
None
Power Connectors
1x 6-pin
Graphics Processor
G98
GPU Name
GK106
G98-400-U2
GPU Variant
GK106-400-A1
Tesla
Architecture
Kepler
TSMC
Foundry
TSMC
65 nm
Process Size
28 nm
0.21 billion
Transistors
2.54 billion
86 mm²
Die Size
221 mm²
Graphics Features
11.1 (10_0)
DirectX
12 (11_0)
3.3
OpenGL
4.6
1.1
OpenCL
3.0
N/A
Vulkan
1.1
1.1
CUDA
3.0
4.0
Shader Model
5.1
