Home GPU Comparison AMD Radeon R5 M255 vs AMD Radeon R9 M275X

AMD Radeon R5 M255 vs AMD Radeon R9 M275X

AMD Radeon R5 M255
VS
AMD Radeon R9 M275X
AMD Radeon R5 M255
AMD Radeon R9 M275X
We compared two Mobile platform GPUs: 2GB VRAM Radeon R5 M255 and 2GB VRAM Radeon R9 M275X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 M255 's Advantages
Released 9 months late
Boost Clock has increased by 2% (940MHz vs 925MHz)
AMD Radeon R9 M275X 's Advantages
Larger VRAM bandwidth (72.00GB/s vs 32.00GB/s)
256 additional rendering cores

Score

Benchmark

FP32 (float)
Radeon R5 M255
0.721 TFLOPS
Radeon R9 M275X +64%
1.184 TFLOPS
Radeon R5 M255
VS
Radeon R9 M275X

Graphics Card

Oct 2014
Release Date
Jan 2014
Gem System
Generation
Gem System
Mobile
Type
Mobile
PCIe 3.0 x8
Bus Interface
PCIe 3.0 x16

Clock Speeds

925 MHz
Base Clock
900 MHz
940 MHz
Boost Clock
925 MHz
1000 MHz
Memory Clock
1125 MHz

Memory

2GB
Memory Size
2GB
DDR3
Memory Type
GDDR5
128bit
Memory Bus
128bit
32.00GB/s
Bandwidth
72.00GB/s

Render Config

6
Compute Units
10
-
-
-
384
Shading Units
640
24
TMUs
40
8
ROPs
16
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
16 KB (per CU)
256 KB
L2 Cache
256 KB
-
-
-

Theoretical Performance

7.520 GPixel/s
Pixel Rate
14.80 GPixel/s
22.56 GTexel/s
Texture Rate
37.00 GTexel/s
721.9 GFLOPS
FP16 (half)
-
721.9 GFLOPS
FP32 (float)
1184 GFLOPS
45.12 GFLOPS
FP64 (double)
74.00 GFLOPS

Board Design

Unknown
TDP
Unknown
-
-
-
Portable Device Dependent
Outputs
Portable Device Dependent
-
-
-

Graphics Processor

Topaz
GPU Name
Venus
Topaz PRO (216-0858030)
GPU Variant
Venus XTX (216-0846033)
GCN 3.0
Architecture
GCN 1.0
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.55 billion
Transistors
1.5 billion
125 mm²
Die Size
123 mm²

Graphics Features

12 (12_0)
DirectX
12 (11_1)
4.6
OpenGL
4.6
2.1
OpenCL
2.1 (1.2)
1.2.170
Vulkan
1.2.170
-
-
-
6.5
Shader Model
6.5 (5.1)

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