ATI Radeon HD 4770 vs AMD Radeon R9 390X

VS

ATI Radeon HD 4770

AMD Radeon R9 390X

We compared two Desktop platform GPUs: 512MB VRAM Radeon HD 4770 and 8GB VRAM Radeon R9 390X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4770 's Advantages

Lower TDP (80W vs 275W)

AMD Radeon R9 390X 's Advantages

Released 6 years and 2 months late

More VRAM (8GB vs 512GB)

Larger VRAM bandwidth (384.0GB/s vs 51.20GB/s)

2176 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 4770

0.96 TFLOPS

Radeon R9 390X +516%

5.914 TFLOPS

Radeon HD 4770

VS

Radeon R9 390X

Graphics Card

Apr 2009

Release Date

Jun 2015

Radeon R700

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

800 MHz

Memory Clock

1500 MHz

Memory

512MB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

512bit

51.20GB/s

Bandwidth

384.0GB/s

Render Config

8

Compute Units

44

-

640

Shading Units

2816

32

TMUs

176

16

ROPs

64

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

1024 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

67.20 GPixel/s

24.00 GTexel/s

Texture Rate

184.8 GTexel/s

-

960.0 GFLOPS

FP32 (float)

5.914 TFLOPS

192.0 GFLOPS

FP64 (double)

739.2 GFLOPS

Board Design

80W

TDP

275W

250 W

Suggested PSU

600 W

2x DVI 1x S-Video

Outputs

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

1x 6-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

RV740

GPU Name

Grenada

RV740 XT (215-0727019)

GPU Variant

Grenada XT (215-0880004)

TeraScale

Architecture

GCN 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

28 nm

0.826 billion

Transistors

6.2 billion

137 mm²

Die Size

438 mm²

Graphics Features

10.1 (10_1)

DirectX

12 (12_0)

3.3

OpenGL

4.6

1.1

OpenCL

2.0

N/A

Vulkan

1.2

-

4.1

Shader Model

6.3

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