Home GPU Comparison AMD Radeon RX 640 Mobile vs AMD Radeon R9 M385

AMD Radeon RX 640 Mobile vs AMD Radeon R9 M385

AMD Radeon RX 640 Mobile
VS
AMD Radeon R9 M385
AMD Radeon RX 640 Mobile
AMD Radeon R9 M385
We compared two Mobile platform GPUs: 2GB VRAM Radeon RX 640 Mobile and 4GB VRAM Radeon R9 M385 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 640 Mobile 's Advantages
Released 4 years late
Boost Clock has increased by 22% (1218MHz vs 1000MHz)
AMD Radeon R9 M385 's Advantages
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (76.80GB/s vs 48.00GB/s)
256 additional rendering cores

Score

Benchmark

FP32 (float)
Radeon RX 640 Mobile
1.559 TFLOPS
Radeon R9 M385 +14%
1.792 TFLOPS
Radeon RX 640 Mobile
VS
Radeon R9 M385

Graphics Card

May 2019
Release Date
May 2015
Mobility Radeon
Generation
Gem System
Mobile
Type
Mobile
PCIe 3.0 x8
Bus Interface
PCIe 3.0 x16

Clock Speeds

1082 MHz
Base Clock
900 MHz
1218 MHz
Boost Clock
1000 MHz
1500 MHz
Memory Clock
1200 MHz

Memory

2GB
Memory Size
4GB
GDDR5
Memory Type
GDDR5
64bit
Memory Bus
128bit
48.00GB/s
Bandwidth
76.80GB/s

Render Config

10
Compute Units
14
-
-
-
640
Shading Units
896
40
TMUs
56
16
ROPs
16
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
512 KB
L2 Cache
256 KB
-
-
-

Theoretical Performance

19.49 GPixel/s
Pixel Rate
16.00 GPixel/s
48.72 GTexel/s
Texture Rate
56.00 GTexel/s
1.559 TFLOPS
FP16 (half)
-
1.559 TFLOPS
FP32 (float)
1.792 TFLOPS
97.44 GFLOPS
FP64 (double)
112.0 GFLOPS

Board Design

50W
TDP
Unknown
-
-
-
No outputs
Outputs
Portable Device Dependent
None
Power Connectors
-

Graphics Processor

Polaris 23
GPU Name
Strato
Polaris 23 XT
GPU Variant
Strato XT
GCN 4.0
Architecture
GCN 2.0
GlobalFoundries
Foundry
TSMC
14 nm
Process Size
28 nm
2.2 billion
Transistors
2.08 billion
103 mm²
Die Size
160 mm²

Graphics Features

12 (12_0)
DirectX
12 (12_0)
4.6
OpenGL
4.6
2.1
OpenCL
2.1
1.2
Vulkan
1.2.170
-
-
-
6.4
Shader Model
6.5

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