AMD Radeon RX 640 Mobile vs AMD Radeon HD 6950M

VS

AMD Radeon RX 640 Mobile AMD Radeon HD 6950M

We compared two Mobile platform GPUs: 2GB VRAM Radeon RX 640 Mobile and 1024MB VRAM Radeon HD 6950M to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 640 Mobile 's Advantages

Released 8 years and 4 months late

Boost Clock1218MHz

More VRAM (2GB vs 1GB)

AMD Radeon HD 6950M 's Advantages

Larger VRAM bandwidth (115.2GB/s vs 48.00GB/s)

320 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 640 Mobile +39%

1.559 TFLOPS

Radeon HD 6950M

1.114 TFLOPS

Radeon RX 640 Mobile

VS

Radeon HD 6950M

Graphics Card

May 2019

Release Date

Jan 2011

Mobility Radeon

Generation

Vancouver

Mobile

Type

Mobile

PCIe 3.0 x8

Bus Interface

MXM-B (3.0)

Clock Speeds

1082 MHz

Base Clock

-

1218 MHz

Boost Clock

-

1500 MHz

Memory Clock

900 MHz

Memory

2GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

256bit

48.00GB/s

Bandwidth

115.2GB/s

Render Config

-

SM Count

-

10

Compute Units

12

640

Shading Units

960

40

TMUs

48

16

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

8 KB (per CU)

512 KB

L2 Cache

512 KB

Theoretical Performance

19.49 GPixel/s

Pixel Rate

18.56 GPixel/s

48.72 GTexel/s

Texture Rate

27.84 GTexel/s

1.559 TFLOPS

FP16 (half)

-

1.559 TFLOPS

FP32 (float)

1114 GFLOPS

97.44 GFLOPS

FP64 (double)

-

Graphics Processor

Polaris 23

GPU Name

Blackcomb

Polaris 23 XT

GPU Variant

Blackcomb PRO

GCN 4.0

Architecture

TeraScale 2

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

40 nm

2.2 billion

Transistors

1.7 billion

103 mm²

Die Size

212 mm²

Board Design

50W

TDP

50W

-

Suggested PSU

-

No outputs

Outputs

No outputs

None

Power Connectors

-

Graphics Features

12 (12_0)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.1

OpenCL

1.2

Vulkan

N/A

-

CUDA

-

6.4

Shader Model

5.0

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