AMD Radeon R9 M275 vs NVIDIA GeForce 840M

VS

AMD Radeon R9 M275

NVIDIA GeForce 840M

We compared two Mobile platform GPUs: 2GB VRAM Radeon R9 M275 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 M275 's Advantages

Larger VRAM bandwidth (64.00GB/s vs 16.02GB/s)

256 additional rendering cores

NVIDIA GeForce 840M 's Advantages

Boost Clock has increased by 22% (1124MHz vs 925MHz)

Score

Benchmark

FP32 (float)

Radeon R9 M275 +37%

1.184 TFLOPS

GeForce 840M

0.863 TFLOPS

Radeon R9 M275

VS

GeForce 840M

Graphics Card

Jan 2014

Release Date

Mar 2014

Gem System

Generation

GeForce 800M

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

900 MHz

Base Clock

1029 MHz

925 MHz

Boost Clock

1124 MHz

1000 MHz

Memory Clock

1001 MHz

Memory

2GB

Memory Size

2GB

GDDR5

Memory Type

DDR3

128bit

Memory Bus

64bit

64.00GB/s

Bandwidth

16.02GB/s

Render Config

10

Compute Units

-

640

Shading Units

384

40

TMUs

16

ROPs

8

-

16 KB (per CU)

L1 Cache

64 KB (per SMM)

256 KB

L2 Cache

1024 KB

-

Theoretical Performance

14.80 GPixel/s

Pixel Rate

8.992 GPixel/s

37.00 GTexel/s

Texture Rate

17.98 GTexel/s

-

1184 GFLOPS

FP32 (float)

863.2 GFLOPS

74.00 GFLOPS

FP64 (double)

26.98 GFLOPS

Board Design

Unknown

TDP

33W

-

Portable Device Dependent

Outputs

No outputs

-

Graphics Processor

Venus

GPU Name

GM108

Venus XTX (216-0846033)

GPU Variant

N15S-GT

GCN 1.0

Architecture

Maxwell

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

1.5 billion

Transistors

Unknown

123 mm²

Die Size

Unknown

Graphics Features

12 (11_1)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.1 (1.2)

OpenCL

3.0

1.2.170

Vulkan

1.3

-

CUDA

5.0

6.5 (5.1)

Shader Model

5.1

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