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GPU Comparison
AMD Radeon R9 M295X vs NVIDIA GeForce 840M
AMD Radeon R9 M295X vs NVIDIA GeForce 840M
VS
AMD Radeon R9 M295X
NVIDIA GeForce 840M
We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M295X and 2GB VRAM GeForce 840M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R9 M295X 's Advantages
Released 8 months late
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (160.0GB/s vs 16.02GB/s)
1664 additional rendering cores
NVIDIA GeForce 840M 's Advantages
Boost Clock1124MHz
Lower TDP (33W vs 250W)
Score
Benchmark
FP32 (float)
Radeon R9 M295X
+243%
2.961 TFLOPS
GeForce 840M
0.863 TFLOPS
Radeon R9 M295X
VS
GeForce 840M
Graphics Card
Nov 2014
Release Date
Mar 2014
Crystal System
Generation
GeForce 800M
Mobile
Type
Mobile
MXM-B (3.0)
Bus Interface
PCIe 3.0 x8
Clock Speeds
-
Base Clock
1029 MHz
-
Boost Clock
1124 MHz
1250 MHz
Memory Clock
1001 MHz
Memory
4GB
Memory Size
2GB
GDDR5
Memory Type
DDR3
256bit
Memory Bus
64bit
160.0GB/s
Bandwidth
16.02GB/s
Render Config
-
SM Count
-
32
Compute Units
-
2048
Shading Units
384
128
TMUs
16
32
ROPs
8
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
64 KB (per SMM)
512 KB
L2 Cache
1024 KB
Theoretical Performance
23.14 GPixel/s
Pixel Rate
8.992 GPixel/s
92.54 GTexel/s
Texture Rate
17.98 GTexel/s
2.961 TFLOPS
FP16 (half)
-
2.961 TFLOPS
FP32 (float)
863.2 GFLOPS
185.1 GFLOPS
FP64 (double)
26.98 GFLOPS
Graphics Processor
Amethyst
GPU Name
GM108
Amethyst XT
GPU Variant
N15S-GT
GCN 3.0
Architecture
Maxwell
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
5 billion
Transistors
Unknown
366 mm²
Die Size
Unknown
Board Design
250W
TDP
33W
-
Suggested PSU
-
No outputs
Outputs
No outputs
None
Power Connectors
-
Graphics Features
12 (12_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
2.0
OpenCL
3.0
1.2
Vulkan
1.3
-
CUDA
5.0
6.3
Shader Model
5.1
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