NVIDIA GeForce GTX 780 Rev. 2 vs AMD Radeon HD 6850 X2
GPU · Specs Compare
Graphics Card
Release Date
Sep 2013
Sep 2011
Generation
GeForce 700
Northern Islands
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 2.0 x16
Clock Speeds
Base Clock
863 MHz
—
Boost Clock
902 MHz
—
Memory Clock
1502 MHz
1050 MHz
Memory
Memory Size
3GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
256bit
Bandwidth
288.4GB/s
134.4GB/s
Render Config
Shading Units
2304
960
TMUs
192
48
ROPs
48
32
L1 Cache
16 KB (per SMX)
8 KB (per CU)
L2 Cache
1536 KB
512 KB
Compute Units
—
12
Theoretical Performance
Pixel Rate
43.30 GPixel/s
25.60 GPixel/s
Texture Rate
173.2 GTexel/s
38.40 GTexel/s
FP32 (float)
4.156 TFLOPS
1.536 TFLOPS
FP64 (double)
173.2 GFLOPS
—
Graphics Processor
GPU Name
GK110B
Barts
GPU Variant
GK110-300-B1
Barts PRO(215-0798006)
Architecture
Kepler
TeraScale 2
Foundry
TSMC
TSMC
Process Size
28 nm
40 nm
Transistors
7.08 billion
1.7 billion
Die Size
561 mm²
255 mm²
Board Design
TDP
250W
254W
Suggested PSU
600 W
600 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
2x DVI1x HDMI 1.3a1x DisplayPort 1.1
Power Connectors
1x 6-pin + 1x 8-pin
2x 8-pin
Graphics Features
DirectX
12 (11_1)
11.2 (11_0)
OpenGL
4.6
4.4
OpenCL
3.0
1.2
Vulkan
1.1
N/A
CUDA
3.5
—
Shader Model
5.1
5.0
▲ Specs Compare
Data sourced from official specifications and benchmark tests.