NVIDIA GeForce GTX 780 6 GB vs AMD Radeon HD 8870 OEM
GPU · Specs Compare
Graphics Card
Release Date
Sep 2013
Jan 2013
Generation
GeForce 700
Sea Islands
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
863 MHz
—
Boost Clock
902 MHz
—
Memory Clock
1502 MHz
1200 MHz
Memory
Memory Size
6GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
384bit
256bit
Bandwidth
288.4GB/s
153.6GB/s
Render Config
Shading Units
2304
1280
TMUs
192
80
ROPs
48
32
L1 Cache
16 KB (per SMX)
16 KB (per CU)
L2 Cache
1536 KB
512 KB
Compute Units
—
20
Theoretical Performance
Pixel Rate
43.30 GPixel/s
32.00 GPixel/s
Texture Rate
173.2 GTexel/s
80.00 GTexel/s
FP32 (float)
4.156 TFLOPS
2.560 TFLOPS
FP64 (double)
173.2 GFLOPS
160.0 GFLOPS
Graphics Processor
GPU Name
GK110B
Pitcairn
GPU Variant
GK110-301-B1
Pitcairn XT(215-0828047)
Architecture
Kepler
GCN 1.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
7.08 billion
2.8 billion
Die Size
561 mm²
212 mm²
Board Design
TDP
250W
175W
Suggested PSU
600 W
450 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Power Connectors
1x 6-pin + 1x 8-pin
2x 6-pin
Graphics Features
DirectX
12 (11_1)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
3.0
1.2
Vulkan
1.1
1.2
CUDA
3.5
—
Shader Model
5.1
5.1
▲ Specs Compare
Data sourced from official specifications and benchmark tests.