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GPU Comparison
NVIDIA GeForce 8400 GS PCI Rev. 2 vs AMD Radeon HD 6990
NVIDIA GeForce 8400 GS PCI Rev. 2 vs AMD Radeon HD 6990
VS
NVIDIA GeForce 8400 GS PCI Rev. 2
AMD Radeon HD 6990
We compared two Desktop platform GPUs: 512MB VRAM GeForce 8400 GS PCI Rev. 2 and 2GB VRAM Radeon HD 6990 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce 8400 GS PCI Rev. 2 's Advantages
Lower TDP (40W vs 375W)
AMD Radeon HD 6990 's Advantages
Released 3 years and 11 months late
Larger VRAM bandwidth (160.0GB/s vs 8.000GB/s)
1520 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce 8400 GS PCI Rev. 2
0.039 TFLOPS
Radeon HD 6990
+6438%
2.55 TFLOPS
GeForce 8400 GS PCI Rev. 2
VS
Radeon HD 6990
Graphics Card
Apr 2007
Release Date
Mar 2011
GeForce 8
Generation
Northern Islands
Desktop
Type
Desktop
PCI
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
500 MHz
Memory Clock
1250 MHz
Memory
512MB
Memory Size
2GB
DDR3
Memory Type
GDDR5
64bit
Memory Bus
256bit
8.000GB/s
Bandwidth
160.0GB/s
Render Config
2
SM Count
-
-
Compute Units
24
16
Shading Units
1536
8
TMUs
96
4
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
-
L1 Cache
8 KB (per CU)
32 KB
L2 Cache
512 KB
Theoretical Performance
2.080 GPixel/s
Pixel Rate
26.56 GPixel/s
4.160 GTexel/s
Texture Rate
79.68 GTexel/s
-
FP16 (half)
-
39.36 GFLOPS
FP32 (float)
2.550 TFLOPS
-
FP64 (double)
637.4 GFLOPS
Graphics Processor
GT218
GPU Name
Antilles
-
GPU Variant
Antilles XT (215-0807027)
Tesla 2.0
Architecture
TeraScale 3
TSMC
Foundry
TSMC
40 nm
Process Size
40 nm
0.26 billion
Transistors
2.64 billion
57 mm²
Die Size
389 mm²
Board Design
40W
TDP
375W
200 W
Suggested PSU
750 W
1x DVI 1x HDMI 1x VGA
Outputs
1x DVI 4x mini-DisplayPort 1.2
None
Power Connectors
2x 8-pin
Graphics Features
11.1 (10_1)
DirectX
11.2 (11_0)
3.3
OpenGL
4.4
1.1
OpenCL
1.2
N/A
Vulkan
N/A
1.2
CUDA
-
4.1
Shader Model
5.0
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4
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6
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7
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8
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9
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10
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