ATI Radeon HD 4870 X2 vs AMD Radeon R9 390

VS

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

Main Differences

AMD Radeon R9 390 's Advantages

Released 6 years and 10 months late

More VRAM (8GB vs 1GB)

Larger VRAM bandwidth (384.0GB/s vs 115.2GB/s)

1760 additional rendering cores

Lower TDP (275W vs 286W)

Score

Benchmark

FP32 (float)

Radeon HD 4870 X2

1.2 TFLOPS

Radeon R9 390 +326%

5.12 TFLOPS

Radeon HD 4870 X2

VS

Radeon R9 390

Graphics Card

Aug 2008

Release Date

Jun 2015

Radeon R700

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

-

Boost Clock

-

900 MHz

Memory Clock

1500 MHz

Memory

1024MB

Memory Size

8GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

512bit

115.2GB/s

Bandwidth

384.0GB/s

Render Config

-

SM Count

-

10

Compute Units

40

800

Shading Units

2560

40

TMUs

160

16

ROPs

64

-

Tensor Cores

-

RT Cores

-

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

-

FP16 (half)

-

1200 GFLOPS

FP32 (float)

5.120 TFLOPS

240.0 GFLOPS

FP64 (double)

640.0 GFLOPS

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

Board Design

286W

TDP

275W

600 W

Suggested PSU

600 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

1x 6-pin + 1x 8-pin

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

-

CUDA

-

4.1

Shader Model

6.3

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