NVIDIA GeForce GTX 490 vs NVIDIA GeForce 8400
We compared two Desktop platform GPUs: 1536MB VRAM GeForce GTX 490 and 256MB VRAM GeForce 8400 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GTX 490 's Advantages
More VRAM (1536GB vs 256GB)
Larger VRAM bandwidth (164.0GB/s vs 8.000GB/s)
472 additional rendering cores
NVIDIA GeForce 8400 's Advantages
Lower TDP (25W vs 365W)
Score
Benchmark
FP32 (float)
GeForce GTX 490
+5452%
1.166 TFLOPS
GeForce 8400
0.021 TFLOPS
Graphics Card
Unknown
Release Date
Dec 2007
GeForce 400
Generation
GeForce 8
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
-
-
-
-
-
854 MHz
Memory Clock
500 MHz
Memory
1536MB
Memory Size
256MB
GDDR5
Memory Type
DDR2
384bit
Memory Bus
64bit
164.0GB/s
Bandwidth
8.000GB/s
Render Config
-
-
-
15
SM Count
1
480
Shading Units
8
60
TMUs
4
48
ROPs
4
-
-
-
-
-
-
64 KB (per SM)
L1 Cache
-
768 KB
L2 Cache
16 KB
-
-
-
Theoretical Performance
18.24 GPixel/s
Pixel Rate
2.160 GPixel/s
36.48 GTexel/s
Texture Rate
2.160 GTexel/s
-
-
-
1166 GFLOPS
FP32 (float)
20.80 GFLOPS
145.8 GFLOPS
FP64 (double)
-
Board Design
365W
TDP
25W
750 W
Suggested PSU
200 W
3x DVI
1x mini-DisplayPort
Outputs
1x DVI
1x VGA
1x S-Video
2x 8-pin
Power Connectors
None
Graphics Processor
GF100
GPU Name
G98
GF100-375-A3
GPU Variant
-
Fermi
Architecture
Tesla
TSMC
Foundry
TSMC
40 nm
Process Size
65 nm
3.1 billion
Transistors
0.21 billion
529 mm²
Die Size
86 mm²
Graphics Features
12 (11_0)
DirectX
11.1 (10_0)
4.6
OpenGL
3.3
1.1
OpenCL
1.1
N/A
Vulkan
N/A
2.0
CUDA
1.1
5.1
Shader Model
4.0
