AMD Radeon HD 7790 vs ATI Radeon HD 4650

VS

AMD Radeon HD 7790

ATI Radeon HD 4650

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 7790 and 256MB VRAM Radeon HD 4650 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 7790 's Advantages

Released 4 years and 6 months late

More VRAM (1024GB vs 256GB)

Larger VRAM bandwidth (96.00GB/s vs 22.40GB/s)

576 additional rendering cores

ATI Radeon HD 4650 's Advantages

Lower TDP (48W vs 85W)

Score

Benchmark

FP32 (float)

Radeon HD 7790 +366%

1.792 TFLOPS

Radeon HD 4650

0.384 TFLOPS

Radeon HD 7790

VS

Radeon HD 4650

Graphics Card

Mar 2013

Release Date

Sep 2008

Southern Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1500 MHz

Memory Clock

700 MHz

Memory

1024MB

Memory Size

256MB

GDDR5

Memory Type

GDDR3

128bit

Memory Bus

128bit

96.00GB/s

Bandwidth

22.40GB/s

Render Config

14

Compute Units

4

-

896

Shading Units

320

56

TMUs

32

16

ROPs

8

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

128 KB

-

Theoretical Performance

16.00 GPixel/s

Pixel Rate

4.800 GPixel/s

56.00 GTexel/s

Texture Rate

19.20 GTexel/s

-

1.792 TFLOPS

FP32 (float)

384.0 GFLOPS

112.0 GFLOPS

FP64 (double)

-

Board Design

85W

TDP

48W

250 W

Suggested PSU

200 W

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

Outputs

2x DVI 1x S-Video

1x 6-pin

Power Connectors

-

Graphics Processor

Bonaire

GPU Name

RV730

Bonaire XT (215-0839039)

GPU Variant

RV730 PRO (215-0719056)

GCN 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

2.08 billion

Transistors

0.514 billion

160 mm²

Die Size

146 mm²

Graphics Features

12 (12_0)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

2.0

OpenCL

1.1

1.2

Vulkan

N/A

-

6.3

Shader Model

4.1

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