AMD Radeon R9 390X vs ATI Radeon HD 4850 X2

VS

AMD Radeon R9 390X

ATI Radeon HD 4850 X2

We compared two Desktop platform GPUs: 8GB VRAM Radeon R9 390X and 512MB VRAM Radeon HD 4850 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 390X 's Advantages

Released 6 years and 7 months late

More VRAM (8GB vs 512GB)

Larger VRAM bandwidth (384.0GB/s vs 63.68GB/s)

2016 additional rendering cores

ATI Radeon HD 4850 X2 's Advantages

Lower TDP (250W vs 275W)

Score

Benchmark

FP32 (float)

Radeon R9 390X +491%

5.914 TFLOPS

Radeon HD 4850 X2

1 TFLOPS

Radeon R9 390X

VS

Radeon HD 4850 X2

Graphics Card

Jun 2015

Release Date

Nov 2008

Pirate Islands

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

-

1500 MHz

Memory Clock

995 MHz

Memory

8GB

Memory Size

512MB

GDDR5

Memory Type

GDDR3

512bit

Memory Bus

256bit

384.0GB/s

Bandwidth

63.68GB/s

Render Config

44

Compute Units

10

-

2816

Shading Units

800

176

TMUs

40

64

ROPs

16

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

1024 KB

L2 Cache

256 KB

-

Theoretical Performance

67.20 GPixel/s

Pixel Rate

10.00 GPixel/s

184.8 GTexel/s

Texture Rate

25.00 GTexel/s

-

5.914 TFLOPS

FP32 (float)

1000 GFLOPS

739.2 GFLOPS

FP64 (double)

200.0 GFLOPS

Board Design

275W

TDP

250W

600 W

Suggested PSU

600 W

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

Outputs

4x DVI 1x S-Video

1x 6-pin + 1x 8-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Grenada

GPU Name

R700

Grenada XT (215-0880004)

GPU Variant

R700 PRO (215-0669065)

GCN 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

28 nm

Process Size

55 nm

6.2 billion

Transistors

0.956 billion

438 mm²

Die Size

256 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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