Home GPU Comparison AMD Radeon HD 6990M vs NVIDIA GeForce GT 620M

AMD Radeon HD 6990M vs NVIDIA GeForce GT 620M

We compared two Mobile platform GPUs: 2GB VRAM Radeon HD 6990M and 1024MB VRAM GeForce GT 620M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6990M 's Advantages
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (115.2GB/s vs 28.80GB/s)
1024 additional rendering cores
NVIDIA GeForce GT 620M 's Advantages
Released 1 years and 1 months late
Lower TDP (15W vs 100W)

Score

Benchmark

FP32 (float)
Radeon HD 6990M +533%
1.602 TFLOPS
GeForce GT 620M
0.253 TFLOPS
VS

Graphics Card

Jul 2011
Release Date
Aug 2012
Vancouver
Generation
GeForce 600M
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 2.0 x16

Clock Speeds

-
-
-
-
-
-
900 MHz
Memory Clock
900 MHz

Memory

2GB
Memory Size
1024MB
GDDR5
Memory Type
DDR3
256bit
Memory Bus
128bit
115.2GB/s
Bandwidth
28.80GB/s

Render Config

14
Compute Units
-
-
SM Count
2
1120
Shading Units
96
56
TMUs
16
32
ROPs
4
-
-
-
-
-
-
8 KB (per CU)
L1 Cache
64 KB (per SM)
512 KB
L2 Cache
256 KB
-
-
-

Theoretical Performance

22.88 GPixel/s
Pixel Rate
2.640 GPixel/s
40.04 GTexel/s
Texture Rate
10.56 GTexel/s
-
-
-
1.602 TFLOPS
FP32 (float)
253.4 GFLOPS
-
FP64 (double)
21.12 GFLOPS

Board Design

100W
TDP
15W
-
-
-
No outputs
Outputs
No outputs
None
Power Connectors
-

Graphics Processor

Blackcomb
GPU Name
GF108
Blackcomb XTX (216-0811030)
GPU Variant
N13P-GLP-A1
TeraScale 2
Architecture
Fermi
TSMC
Foundry
TSMC
40 nm
Process Size
40 nm
1.7 billion
Transistors
0.585 billion
212 mm²
Die Size
116 mm²

Graphics Features

11.2 (11_0)
DirectX
12 (11_0)
4.4
OpenGL
4.6
1.2
OpenCL
1.1
N/A
Vulkan
N/A
-
CUDA
2.1
5.0
Shader Model
5.1

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