AMD Radeon HD 6850 vs NVIDIA GeForce GTX 680 Mac Edition
GPU Specs Compare
Graphics Card
Release Date
Oct 2010
Apr 2013
Generation
Northern Islands
GeForce 600
Type
Desktop
Desktop
Bus Interface
PCIe 2.0 x16
PCIe 2.0 x16
Clock Speeds
Memory Clock
1000 MHz
1502 MHz
Base Clock
-
1006 MHz
Boost Clock
-
1058 MHz
Memory
Memory Size
1024MB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
128.0GB/s
192.3GB/s
Render Config
Compute Units
12
-
Shading Units
960
1536
TMUs
48
128
ROPs
32
32
L1 Cache
8 KB (per CU)
16 KB (per SMX)
L2 Cache
512 KB
512 KB
Theoretical Performance
Pixel Rate
24.80 GPixel/s
33.86 GPixel/s
Texture Rate
37.20 GTexel/s
135.4 GTexel/s
FP32 (float)
1488 GFLOPS
3.250 TFLOPS
FP64 (double)
-
135.4 GFLOPS
Graphics Processor
GPU Name
Barts
GK104
GPU Variant
Barts PRO(215-0798006)
GK104-400-A2
Architecture
TeraScale 2
Kepler
Foundry
TSMC
TSMC
Process Size
40 nm
28 nm
Transistors
1.7 billion
3.54 billion
Die Size
255 mm²
294 mm²
Board Design
TDP
127W
195W
Suggested PSU
300 W
450 W
Outputs
2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
1x 6-pin
2x 6-pin
Graphics Features
DirectX
11.2 (11_0)
12 (11_0)
OpenGL
4.4
4.6
OpenCL
1.2
3.0
Vulkan
N/A
1.1
Shader Model
5.0
5.1
CUDA
-
3.0