NVIDIA GeForce GTX 870M vs AMD Radeon HD 7850
GPU · Specs Compare
Graphics Card
Release Date
Mar 2014
Mar 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
1200 MHz
Memory
Memory Size
3GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
192bit
256bit
Bandwidth
120.0GB/s
153.6GB/s
Render Config
Shading Units
1344
1024
TMUs
112
64
ROPs
24
32
L1 Cache
16 KB (per SMX)
16 KB (per CU)
L2 Cache
384 KB
512 KB
Compute Units
—
16
Theoretical Performance
Pixel Rate
27.08 GPixel/s
27.52 GPixel/s
Texture Rate
108.3 GTexel/s
55.04 GTexel/s
FP32 (float)
2.599 TFLOPS
1.761 TFLOPS
FP64 (double)
108.3 GFLOPS
110.1 GFLOPS
Graphics Processor
GPU Name
GK104
Pitcairn
GPU Variant
N15E-GT-A2
Pitcairn PRO(215-0828062)
Architecture
Kepler
GCN 1.0
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
3.54 billion
2.8 billion
Die Size
294 mm²
212 mm²
Board Design
TDP
100W
130W
Outputs
No outputs
1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2
Power Connectors
None
1x 6-pin
Suggested PSU
—
300 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
Benchmark
3DMark Time Spy
—
1,334
3DMark Time Spy Extreme
—
325
▲ Specs Compare
Data sourced from official specifications and benchmark tests.