GeForce GTX 680 Mac Edition vs Radeon Sky 900
We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 680 Mac Edition and 3GB VRAM Radeon Sky 900 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
GeForce GTX 680 Mac Edition 's Advantages
Boost Clock has increased by 11% (1058MHz vs 950MHz)
Lower TDP (195W vs 300W)
Radeon Sky 900 's Advantages
More VRAM (3GB vs 2GB)
Larger VRAM bandwidth (240.0GB/s vs 192.3GB/s)
256 additional rendering cores
Score
Benchmark
FP32 (float)
GeForce GTX 680 Mac Edition
3250
Radeon Sky 900
+4%
3405
Graphics Card
Apr 2013
Release Date
Mar 2013
GeForce 600
Generation
Radeon Sky
Desktop
Type
Desktop
PCIe 2.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
1006 MHz
Base Clock
825 MHz
1058 MHz
Boost Clock
950 MHz
1502 MHz
Memory Clock
1250 MHz
Memory
2GB
Memory Size
3GB
GDDR5
Memory Type
GDDR5
256bit
Memory Bus
384bit
192.3GB/s
Bandwidth
240.0GB/s
Render Config
-
Compute Units
28
1536
Shading Units
1792
128
TMUs
112
32
ROPs
32
16 KB (per SMX)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
768 KB
Theoretical Performance
33.86 GPixel/s
Pixel Rate
30.40 GPixel/s
135.4 GTexel/s
Texture Rate
106.4 GTexel/s
3.250 TFLOPS
FP32 (float)
3.405 TFLOPS
135.4 GFLOPS
FP64 (double)
851.2 GFLOPS
Board Design
195W
TDP
300W
450 W
Suggested PSU
700 W
2x DVI
1x HDMI 1.4a
1x DisplayPort 1.2
Outputs
1x DVI
1x mini-DisplayPort 1.2
2x 6-pin
Power Connectors
2x 8-pin
Graphics Processor
GK104
GPU Name
Tahiti
GK104-400-A2
GPU Variant
Orthrus
Kepler
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
3.54 billion
Transistors
4.313 billion
294 mm²
Die Size
352 mm²
Graphics Features
12 (11_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
3.0
OpenCL
1.2
1.1
Vulkan
1.2
3.0
CUDA
-
5.1
Shader Model
5.1