ATI Radeon HD 4870 X2 vs AMD Radeon R9 390 X2

VS

ATI Radeon HD 4870 X2

AMD Radeon R9 390 X2

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 4870 X2 and 8GB VRAM Radeon R9 390 X2 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

ATI Radeon HD 4870 X2 's Advantages

Lower TDP (286W vs 580W)

AMD Radeon R9 390 X2 's Advantages

Released 7 years and 1 months late

More VRAM (8GB vs 1024GB)

Larger VRAM bandwidth (345.6GB/s vs 115.2GB/s)

1760 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 4870 X2

1.2 TFLOPS

Radeon R9 390 X2 +326%

5.12 TFLOPS

Radeon HD 4870 X2

VS

Radeon R9 390 X2

Graphics Card

Aug 2008

Release Date

Sep 2015

Radeon R700

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

900 MHz

Memory Clock

1350 MHz

Memory

1024MB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

512bit

115.2GB/s

Bandwidth

345.6GB/s

Render Config

10

Compute Units

40

-

800

Shading Units

2560

40

TMUs

160

16

ROPs

64

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

1024 KB

-

Theoretical Performance

12.00 GPixel/s

Pixel Rate

64.00 GPixel/s

30.00 GTexel/s

Texture Rate

160.0 GTexel/s

-

1200 GFLOPS

FP32 (float)

5.120 TFLOPS

240.0 GFLOPS

FP64 (double)

640.0 GFLOPS

Board Design

286W

TDP

580W

600 W

Suggested PSU

950 W

2x DVI 1x S-Video

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

4x 8-pin

Graphics Processor

R700

GPU Name

Grenada

R700 XT (215-0669045)

GPU Variant

Grenada PRO (215-0880030)

TeraScale

Architecture

GCN 2.0

TSMC

Foundry

TSMC

55 nm

Process Size

28 nm

0.956 billion

Transistors

6.2 billion

256 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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