Radeon HD 6990 vs GeForce GTX 680 Mac Edition
We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6990 and 2GB VRAM GeForce GTX 680 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce GTX 680 Mac Edition 's Advantages
Released 2 years and 1 months late
Boost Clock1058MHz
Larger VRAM bandwidth (192.3GB/s vs 160.0GB/s)
Lower TDP (195W vs 375W)
Score
Benchmark
FP32 (float)
Radeon HD 6990
2550
GeForce GTX 680 Mac Edition
+27%
3250
Graphics Card
Mar 2011
Release Date
Apr 2013
Northern Islands
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 2.0 x16
Clock Speeds
-
Base Clock
1006 MHz
-
Boost Clock
1058 MHz
1250 MHz
Memory Clock
1502 MHz
Memory
2GB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
256bit
160.0GB/s
Bandwidth
192.3GB/s
Render Config
24
Compute Units
-
1536
Shading Units
1536
96
TMUs
128
32
ROPs
32
8 KB (per CU)
L1 Cache
16 KB (per SMX)
512 KB
L2 Cache
512 KB
Theoretical Performance
26.56 GPixel/s
Pixel Rate
33.86 GPixel/s
79.68 GTexel/s
Texture Rate
135.4 GTexel/s
2.550 TFLOPS
FP32 (float)
3.250 TFLOPS
637.4 GFLOPS
FP64 (double)
135.4 GFLOPS
Board Design
375W
TDP
195W
750 W
Suggested PSU
450 W
1x DVI
4x mini-DisplayPort 1.2
Outputs
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
2x 8-pin
Power Connectors
2x 6-pin
Graphics Processor
Antilles
GPU Name
GK104
Antilles XT
(215-0807027)
GPU Variant
GK104-400-A2
TeraScale 3
Architecture
Kepler
TSMC
Foundry
TSMC
40 nm
Process Size
28 nm
2.64 billion
Transistors
3.54 billion
389 mm²
Die Size
294 mm²
Graphics Features
11.2 (11_0)
DirectX
12 (11_0)
4.4
OpenGL
4.6
1.2
OpenCL
3.0
N/A
Vulkan
1.1
-
CUDA
3.0
5.0
Shader Model
5.1