ATI Radeon HD 5770 vs AMD Radeon HD 7950

VS

ATI Radeon HD 5770

AMD Radeon HD 7950

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 5770 and 3GB VRAM Radeon HD 7950 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 5770 's Advantages

Lower TDP (108W vs 200W)

AMD Radeon HD 7950 's Advantages

Released 2 years and 3 months late

More VRAM (3GB vs 1024GB)

Larger VRAM bandwidth (240.0GB/s vs 76.80GB/s)

992 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 5770

1.36 TFLOPS

Radeon HD 7950 +110%

2.867 TFLOPS

Radeon HD 5770

VS

Radeon HD 7950

Graphics Card

Oct 2009

Release Date

Jan 2012

Evergreen

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1200 MHz

Memory Clock

1250 MHz

Memory

1024MB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

384bit

76.80GB/s

Bandwidth

240.0GB/s

Render Config

10

Compute Units

28

-

800

Shading Units

1792

40

TMUs

112

16

ROPs

32

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

768 KB

-

Theoretical Performance

13.60 GPixel/s

Pixel Rate

25.60 GPixel/s

34.00 GTexel/s

Texture Rate

89.60 GTexel/s

-

1360 GFLOPS

FP32 (float)

2.867 TFLOPS

-

FP64 (double)

716.8 GFLOPS

Board Design

108W

TDP

200W

300 W

Suggested PSU

550 W

2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1

Outputs

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

1x 6-pin

Power Connectors

2x 6-pin

Graphics Processor

Juniper

GPU Name

Tahiti

Juniper XT (215-0754013)

GPU Variant

Tahiti PRO (215-0821056)

TeraScale 2

Architecture

GCN 1.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

1.04 billion

Transistors

4.313 billion

166 mm²

Die Size

352 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (11_1)

4.4

OpenGL

4.6

1.2

OpenCL

1.2

N/A

Vulkan

1.2

-

5.0

Shader Model

5.1

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