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GPU Comparison
AMD Radeon HD 6990M vs NVIDIA GeForce 8400M G
AMD Radeon HD 6990M vs NVIDIA GeForce 8400M G
VS
AMD Radeon HD 6990M
NVIDIA GeForce 8400M G
We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 6990M and 256MB VRAM GeForce 8400M G to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon HD 6990M 's Advantages
Released 4 years and 2 months late
Larger VRAM bandwidth (115.2GB/s vs 6.400GB/s)
1112 additional rendering cores
NVIDIA GeForce 8400M G 's Advantages
Lower TDP (10W vs 100W)
Score
Benchmark
FP32 (float)
Radeon HD 6990M
+12223%
1.602 TFLOPS
GeForce 8400M G
0.013 TFLOPS
Radeon HD 6990M
VS
GeForce 8400M G
Graphics Card
Jul 2011
Release Date
May 2007
Vancouver
Generation
GeForce 8M
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 1.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
900 MHz
Memory Clock
400 MHz
Memory
2GB
Memory Size
256MB
GDDR5
Memory Type
GDDR3
256bit
Memory Bus
64bit
115.2GB/s
Bandwidth
6.400GB/s
Render Config
-
SM Count
1
14
Compute Units
-
1120
Shading Units
8
56
TMUs
8
32
ROPs
4
-
Tensor Cores
-
-
RT Cores
-
8 KB (per CU)
L1 Cache
-
512 KB
L2 Cache
16 KB
Theoretical Performance
22.88 GPixel/s
Pixel Rate
1.600 GPixel/s
40.04 GTexel/s
Texture Rate
3.200 GTexel/s
-
FP16 (half)
-
1.602 TFLOPS
FP32 (float)
12.80 GFLOPS
-
FP64 (double)
-
Graphics Processor
Blackcomb
GPU Name
G86
Blackcomb XTX (216-0811030)
GPU Variant
NB8M-SE
TeraScale 2
Architecture
Tesla
TSMC
Foundry
TSMC
40 nm
Process Size
80 nm
1.7 billion
Transistors
0.21 billion
212 mm²
Die Size
127 mm²
Board Design
100W
TDP
10W
-
Suggested PSU
-
No outputs
Outputs
No outputs
None
Power Connectors
None
Graphics Features
11.2 (11_0)
DirectX
11.1 (10_0)
4.4
OpenGL
3.3
1.2
OpenCL
1.1
N/A
Vulkan
N/A
-
CUDA
1.1
5.0
Shader Model
4.0
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