GeForce GTX 680M vs Radeon HD 6990M
We compared two Mobile platform GPUs: 4GB VRAM GeForce GTX 680M and 2GB VRAM Radeon HD 6990M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce GTX 680M 's Advantages
Released 11 months late
Boost Clock758MHz
More VRAM (4GB vs 2GB)
224 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GTX 680M
+27%
2038
Radeon HD 6990M
1602
Graphics Card
Jun 2012
Release Date
Jul 2011
GeForce 600M
Generation
Vancouver
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
MXM-B (3.0)
Clock Speeds
719 MHz
Base Clock
-
758 MHz
Boost Clock
-
900 MHz
Memory Clock
900 MHz
Memory
4GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
256bit
115.2GB/s
Bandwidth
115.2GB/s
Render Config
-
Compute Units
14
1344
Shading Units
1120
112
TMUs
56
32
ROPs
32
16 KB (per SMX)
L1 Cache
8 KB (per CU)
512 KB
L2 Cache
512 KB
Theoretical Performance
21.22 GPixel/s
Pixel Rate
22.88 GPixel/s
84.90 GTexel/s
Texture Rate
40.04 GTexel/s
2.038 TFLOPS
FP32 (float)
1.602 TFLOPS
84.90 GFLOPS
FP64 (double)
-
Board Design
100W
TDP
100W
No outputs
Outputs
No outputs
None
Power Connectors
None
Graphics Processor
GK104
GPU Name
Blackcomb
N13E-GTX-A2
GPU Variant
Blackcomb XTX
(216-0811030)
Kepler
Architecture
TeraScale 2
TSMC
Foundry
TSMC
28 nm
Process Size
40 nm
3.54 billion
Transistors
1.7 billion
294 mm²
Die Size
212 mm²
Graphics Features
12 (11_0)
DirectX
11.2 (11_0)
4.6
OpenGL
4.4
3.0
OpenCL
1.2
1.1
Vulkan
N/A
3.0
CUDA
-
5.1
Shader Model
5.0