AMD Radeon R9 M485X vs NVIDIA GeForce GTX 870M
GPU · Specs Compare
Graphics Card
Release Date
May 2016
Mar 2014
Generation
Crystal System
GeForce 800M
Type
Mobile
Mobile
Bus Interface
MXM-B (3.0)
MXM-B (3.0)
Clock Speeds
Memory Clock
1250 MHz
1250 MHz
Base Clock
—
941 MHz
Boost Clock
—
967 MHz
Memory
Memory Size
8GB
3GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
192bit
Bandwidth
160.0GB/s
120.0GB/s
Render Config
Compute Units
32
—
Shading Units
2048
1344
TMUs
128
112
ROPs
32
24
L1 Cache
16 KB (per CU)
16 KB (per SMX)
L2 Cache
512 KB
384 KB
Theoretical Performance
Pixel Rate
23.14 GPixel/s
27.08 GPixel/s
Texture Rate
92.54 GTexel/s
108.3 GTexel/s
FP16 (half)
2.961 TFLOPS
—
FP32 (float)
2.961 TFLOPS
2.599 TFLOPS
FP64 (double)
185.1 GFLOPS
108.3 GFLOPS
Graphics Processor
GPU Name
Amethyst
GK104
GPU Variant
Amethyst XT
N15E-GT-A2
Architecture
GCN 3.0
Kepler
Foundry
TSMC
TSMC
Process Size
28 nm
28 nm
Transistors
5 billion
3.54 billion
Die Size
366 mm²
294 mm²
Board Design
TDP
250W
100W
Outputs
No outputs
No outputs
Power Connectors
None
None
Graphics Features
DirectX
12 (12_0)
12 (11_0)
OpenGL
4.6
4.6
OpenCL
2.0
3.0
Vulkan
1.2
1.1
Shader Model
6.3
5.1
CUDA
—
3.0
▲ Specs Compare
Data sourced from official specifications and benchmark tests.