Radeon RX 640 Mobile vs GeForce 945A
We compared two Mobile platform GPUs: 2GB VRAM Radeon RX 640 Mobile and 1024MB VRAM GeForce 945A to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
Radeon RX 640 Mobile 's Advantages
Released 4 years and 2 months late
Boost Clock has increased by 2% (1218MHz vs 1189MHz)
More VRAM (2GB vs 1024GB)
Larger VRAM bandwidth (48.00GB/s vs 40.10GB/s)
256 additional rendering cores
GeForce 945A 's Advantages
Lower TDP (33W vs 50W)
Score
Benchmark
FP32 (float)
Radeon RX 640 Mobile
+70%
1559
GeForce 945A
913
Graphics Card
May 2019
Release Date
Mar 2015
Mobility Radeon
Generation
GeForce 900A
Mobile
Type
Mobile
PCIe 3.0 x8
Bus Interface
PCIe 3.0 x8
Clock Speeds
1082 MHz
Base Clock
1006 MHz
1218 MHz
Boost Clock
1189 MHz
1500 MHz
Memory Clock
1253 MHz
Memory
2GB
Memory Size
1024MB
GDDR5
Memory Type
GDDR5
64bit
Memory Bus
64bit
48.00GB/s
Bandwidth
40.10GB/s
Render Config
10
Compute Units
-
640
Shading Units
384
40
TMUs
24
16
ROPs
8
16 KB (per CU)
L1 Cache
64 KB (per SMM)
512 KB
L2 Cache
1024 KB
Theoretical Performance
19.49 GPixel/s
Pixel Rate
9.512 GPixel/s
48.72 GTexel/s
Texture Rate
28.54 GTexel/s
1.559 TFLOPS
FP16 (half)
-
1.559 TFLOPS
FP32 (float)
913.2 GFLOPS
97.44 GFLOPS
FP64 (double)
28.54 GFLOPS
Board Design
50W
TDP
33W
No outputs
Outputs
No outputs
None
Power Connectors
-
Graphics Processor
Polaris 23
GPU Name
GM108
Polaris 23 XT
GPU Variant
-
GCN 4.0
Architecture
Maxwell
GlobalFoundries
Foundry
TSMC
14 nm
Process Size
28 nm
2.2 billion
Transistors
Unknown
103 mm²
Die Size
Unknown
Graphics Features
12 (12_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
2.1
OpenCL
3.0
1.2
Vulkan
1.3
-
CUDA
5.0
6.4
Shader Model
5.1