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GPU Comparison
NVIDIA GeForce GTX 870M vs AMD Radeon R9 M390X
NVIDIA GeForce GTX 870M vs AMD Radeon R9 M390X
VS
NVIDIA GeForce GTX 870M
AMD Radeon R9 M390X
We compared two Mobile platform GPUs: 3GB VRAM GeForce GTX 870M and 4GB VRAM Radeon R9 M390X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
NVIDIA GeForce GTX 870M 's Advantages
Boost Clock967MHz
AMD Radeon R9 M390X 's Advantages
Released 1 years and 2 months late
More VRAM (4GB vs 3GB)
Larger VRAM bandwidth (160.0GB/s vs 120.0GB/s)
704 additional rendering cores
Lower TDP (75W vs 100W)
Score
Benchmark
FP32 (float)
GeForce GTX 870M
2.599 TFLOPS
Radeon R9 M390X
+13%
2.961 TFLOPS
GeForce GTX 870M
VS
Radeon R9 M390X
Graphics Card
Mar 2014
Release Date
May 2015
GeForce 800M
Generation
Crystal System
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 3.0 x16
Clock Speeds
941 MHz
Base Clock
-
967 MHz
Boost Clock
-
1250 MHz
Memory Clock
1250 MHz
Memory
3GB
Memory Size
4GB
GDDR5
Memory Type
GDDR5
192bit
Memory Bus
256bit
120.0GB/s
Bandwidth
160.0GB/s
Render Config
-
SM Count
-
-
Compute Units
32
1344
Shading Units
2048
112
TMUs
128
24
ROPs
32
-
Tensor Cores
-
-
RT Cores
-
16 KB (per SMX)
L1 Cache
16 KB (per CU)
384 KB
L2 Cache
512 KB
Theoretical Performance
27.08 GPixel/s
Pixel Rate
23.14 GPixel/s
108.3 GTexel/s
Texture Rate
92.54 GTexel/s
-
FP16 (half)
2.961 TFLOPS
2.599 TFLOPS
FP32 (float)
2.961 TFLOPS
108.3 GFLOPS
FP64 (double)
185.1 GFLOPS
Graphics Processor
GK104
GPU Name
Amethyst
N15E-GT-A2
GPU Variant
Amethyst XT
Kepler
Architecture
GCN 3.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
3.54 billion
Transistors
5 billion
294 mm²
Die Size
366 mm²
Board Design
100W
TDP
75W
-
Suggested PSU
-
No outputs
Outputs
No outputs
None
Power Connectors
None
Graphics Features
12 (11_0)
DirectX
12 (12_0)
4.6
OpenGL
4.6
3.0
OpenCL
2.0
1.1
Vulkan
1.2
3.0
CUDA
-
5.1
Shader Model
6.3
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