AMD Radeon R9 M295X vs NVIDIA GeForce 800M

VS

AMD Radeon R9 M295X

NVIDIA GeForce 800M

We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M295X and 1024MB VRAM GeForce 800M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M295X 's Advantages

Released 8 months late

More VRAM (4GB vs 1024GB)

Larger VRAM bandwidth (160.0GB/s vs 14.40GB/s)

2000 additional rendering cores

NVIDIA GeForce 800M 's Advantages

Lower TDP (15W vs 250W)

Score

Benchmark

FP32 (float)

Radeon R9 M295X +1985%

2.961 TFLOPS

GeForce 800M

0.142 TFLOPS

Radeon R9 M295X

VS

GeForce 800M

Graphics Card

Nov 2014

Release Date

Mar 2014

Crystal System

Generation

GeForce 800M

Mobile

Type

Mobile

MXM-B (3.0)

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1250 MHz

Memory Clock

900 MHz

Memory

4GB

Memory Size

1024MB

GDDR5

Memory Type

DDR3

256bit

Memory Bus

64bit

160.0GB/s

Bandwidth

14.40GB/s

Render Config

32

Compute Units

-

SM Count

1

2048

Shading Units

48

128

TMUs

8

32

ROPs

8

-

16 KB (per CU)

L1 Cache

64 KB (per SM)

512 KB

L2 Cache

128 KB

-

Theoretical Performance

23.14 GPixel/s

Pixel Rate

1.476 GPixel/s

92.54 GTexel/s

Texture Rate

5.904 GTexel/s

2.961 TFLOPS

FP16 (half)

-

2.961 TFLOPS

FP32 (float)

141.7 GFLOPS

185.1 GFLOPS

FP64 (double)

11.81 GFLOPS

Board Design

250W

TDP

15W

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Processor

Amethyst

GPU Name

GF117

Amethyst XT

GPU Variant

N14M-GL

GCN 3.0

Architecture

Fermi 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

5 billion

Transistors

0.585 billion

366 mm²

Die Size

116 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_0)

4.6

OpenGL

4.6

2.0

OpenCL

1.1

1.2

Vulkan

N/A

-

CUDA

2.1

6.3

Shader Model

5.1

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