AMD Radeon 550X 640SP vs AMD Radeon HD 7950 Boost

VS

AMD Radeon 550X 640SP

AMD Radeon HD 7950 Boost

We compared two Desktop platform GPUs: 4GB VRAM Radeon 550X 640SP and 3GB VRAM Radeon HD 7950 Boost to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon 550X 640SP 's Advantages

Released 5 years and 10 months late

Boost Clock has increased by 16% (1071MHz vs 925MHz)

More VRAM (4GB vs 3GB)

Lower TDP (50W vs 200W)

AMD Radeon HD 7950 Boost 's Advantages

Larger VRAM bandwidth (240.0GB/s vs 48.00GB/s)

1152 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon 550X 640SP

1.371 TFLOPS

Radeon HD 7950 Boost +141%

3.315 TFLOPS

Radeon 550X 640SP

VS

Radeon HD 7950 Boost

Graphics Card

Apr 2018

Release Date

Jun 2012

Polaris

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1019 MHz

Base Clock

850 MHz

1071 MHz

Boost Clock

925 MHz

1500 MHz

Memory Clock

1250 MHz

Memory

4GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

64bit

Memory Bus

384bit

48.00GB/s

Bandwidth

240.0GB/s

Render Config

10

Compute Units

28

-

640

Shading Units

1792

40

TMUs

112

16

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

768 KB

-

Theoretical Performance

17.14 GPixel/s

Pixel Rate

29.60 GPixel/s

42.84 GTexel/s

Texture Rate

103.6 GTexel/s

1371 GFLOPS

FP16 (half)

-

1371 GFLOPS

FP32 (float)

3.315 TFLOPS

85.68 GFLOPS

FP64 (double)

828.8 GFLOPS

Board Design

50W

TDP

200W

250 W

Suggested PSU

550 W

1x DVI 1x HDMI 2.0b 1x DisplayPort 1.4a

Outputs

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

None

Power Connectors

2x 6-pin

Graphics Processor

Lexa

GPU Name

Tahiti

Lexa PRO (215-0904018)

GPU Variant

Tahiti PRO2 (215-0821282)

GCN 4.0

Architecture

GCN 1.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

2.2 billion

Transistors

4.313 billion

103 mm²

Die Size

352 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

Vulkan

1.2

-

6.4

Shader Model

5.1

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