Home GPU Comparison AMD Radeon R5 A255 vs NVIDIA GeForce 845M

AMD Radeon R5 A255 vs NVIDIA GeForce 845M

We compared two Mobile platform GPUs: 1024MB VRAM Radeon R5 A255 and 2GB VRAM GeForce 845M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 A255 's Advantages
Larger VRAM bandwidth (64.00GB/s vs 40.10GB/s)
NVIDIA GeForce 845M 's Advantages
Released 1 years and 7 months late
Boost Clock has increased by 25% (1176MHz vs 940MHz)
More VRAM (2GB vs 1024GB)

Score

Benchmark

FP32 (float)
Radeon R5 A255
0.721 TFLOPS
GeForce 845M +25%
0.903 TFLOPS
VS

Graphics Card

Jan 2014
Release Date
Aug 2015
All-In-One
Generation
GeForce 800M
Mobile
Type
Mobile
PCIe 3.0 x8
Bus Interface
PCIe 3.0 x8

Clock Speeds

925 MHz
Base Clock
1071 MHz
940 MHz
Boost Clock
1176 MHz
1000 MHz
Memory Clock
1253 MHz

Memory

1024MB
Memory Size
2GB
GDDR5
Memory Type
GDDR5
128bit
Memory Bus
64bit
64.00GB/s
Bandwidth
40.10GB/s

Render Config

6
Compute Units
-
-
-
-
384
Shading Units
384
24
TMUs
32
8
ROPs
16
-
-
-
-
-
-
16 KB (per CU)
L1 Cache
64 KB (per SMM)
256 KB
L2 Cache
1024 KB
-
-
-

Theoretical Performance

7.520 GPixel/s
Pixel Rate
18.82 GPixel/s
22.56 GTexel/s
Texture Rate
37.63 GTexel/s
-
-
-
721.9 GFLOPS
FP32 (float)
903.2 GFLOPS
-
FP64 (double)
28.22 GFLOPS

Board Design

Unknown
TDP
33W
-
-
-
Portable Device Dependent
Outputs
No outputs
-
-
-

Graphics Processor

Topaz
GPU Name
GM108
Topaz PRO (216-0858030)
GPU Variant
-
GCN 3.0
Architecture
Maxwell
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
1.55 billion
Transistors
Unknown
125 mm²
Die Size
Unknown

Graphics Features

12 (12_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
2.1
OpenCL
3.0
1.2.170
Vulkan
1.3
-
CUDA
5.0
6.5
Shader Model
5.1

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