AMD Radeon R9 M290X vs AMD Radeon HD 8790M

VS

We compared two Mobile platform GPUs: 4GB VRAM Radeon R9 M290X and 2GB VRAM Radeon HD 8790M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 M290X 's Advantages

Released 9 months late

More VRAM (4GB vs 2GB)

Larger VRAM bandwidth (153.6GB/s vs 64.00GB/s)

896 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 M290X +233%

2.304 TFLOPS

Radeon HD 8790M

0.691 TFLOPS

Radeon R9 M290X

VS

Radeon HD 8790M

Graphics Card

Jan 2014

Release Date

Apr 2013

Crystal System

Generation

Solar System

Mobile

Type

Mobile

PCIe 3.0 x16

Bus Interface

MXM-A (3.0)

Clock Speeds

850 MHz

Base Clock

850 MHz

900 MHz

Boost Clock

900 MHz

1200 MHz

Memory Clock

1000 MHz

Memory

4GB

Memory Size

2GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

128bit

153.6GB/s

Bandwidth

64.00GB/s

Render Config

-

SM Count

-

20

Compute Units

6

1280

Shading Units

384

80

TMUs

24

32

ROPs

8

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

256 KB

Theoretical Performance

28.80 GPixel/s

Pixel Rate

7.200 GPixel/s

72.00 GTexel/s

Texture Rate

21.60 GTexel/s

-

FP16 (half)

-

2.304 TFLOPS

FP32 (float)

691.2 GFLOPS

144.0 GFLOPS

FP64 (double)

43.20 GFLOPS

Graphics Processor

Neptune

GPU Name

Mars

Neptune XT (216-0847000)

GPU Variant

Mars M2 XTX (216-0842036)

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

2.8 billion

Transistors

0.95 billion

212 mm²

Die Size

77 mm²

Board Design

100W

TDP

Unknown

-

Suggested PSU

-

No outputs

Outputs

Portable Device Dependent

None

Power Connectors

None

Graphics Features

12 (11_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.2

OpenCL

2.1 (1.2)

1.2

Vulkan

1.2.170

-

CUDA

-

5.1

Shader Model

6.5 (5.1)

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