NVIDIA GeForce GTX 870M vs AMD Radeon HD 7970 X2
GPU Specs Compare
Graphics Card
Release Date
Mar 2014
Aug 2012
Generation
GeForce 800M
Southern Islands
Type
Mobile
Desktop
Bus Interface
MXM-B (3.0)
PCIe 3.0 x16
Clock Speeds
Base Clock
941 MHz
-
Boost Clock
967 MHz
-
Memory Clock
1250 MHz
1375 MHz
Memory
Memory Size
3GB
3GB
Memory Type
GDDR5
GDDR5
Memory Bus
192bit
384bit
Bandwidth
120.0GB/s
264.0GB/s
Render Config
Shading Units
1344
2048
TMUs
112
128
ROPs
24
32
L1 Cache
16 KB (per SMX)
16 KB (per CU)
L2 Cache
384 KB
768 KB
Compute Units
-
32
Theoretical Performance
Pixel Rate
27.08 GPixel/s
29.60 GPixel/s
Texture Rate
108.3 GTexel/s
118.4 GTexel/s
FP32 (float)
2.599 TFLOPS
3.789 TFLOPS
FP64 (double)
108.3 GFLOPS
947.2 GFLOPS
Graphics Processor
GPU Name
GK104
New Zealand
GPU Variant
N15E-GT-A2
-
Architecture
Kepler
GCN 1.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
3.54 billion
4.313 billion
Die Size
294 mm²
352 mm²
Board Design
TDP
100W
500W
Outputs
No outputs
2x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Power Connectors
None
3x 8-pin
Suggested PSU
-
900 W
Graphics Features
DirectX
12 (11_0)
12 (11_1)
OpenGL
4.6
4.6
OpenCL
3.0
1.2
Vulkan
1.1
1.2
CUDA
3.0
-
Shader Model
5.1
5.1