AMD Radeon R9 390X vs AMD Radeon HD 8740 OEM

VS

AMD Radeon R9 390X

AMD Radeon HD 8740 OEM

We compared two Desktop platform GPUs: 8GB VRAM Radeon R9 390X and 1024MB VRAM Radeon HD 8740 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 390X 's Advantages

Released 1 years and 9 months late

More VRAM (8GB vs 1024GB)

Larger VRAM bandwidth (384.0GB/s vs 72.00GB/s)

2304 additional rendering cores

AMD Radeon HD 8740 OEM 's Advantages

Lower TDP (55W vs 275W)

Score

Benchmark

FP32 (float)

Radeon R9 390X +622%

5.914 TFLOPS

Radeon HD 8740 OEM

0.819 TFLOPS

Radeon R9 390X

VS

Radeon HD 8740 OEM

Graphics Card

Jun 2015

Release Date

Sep 2013

Pirate Islands

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

1500 MHz

Memory Clock

1125 MHz

Memory

8GB

Memory Size

1024MB

GDDR5

Memory Type

GDDR5

512bit

Memory Bus

128bit

384.0GB/s

Bandwidth

72.00GB/s

Render Config

44

Compute Units

8

-

2816

Shading Units

512

176

TMUs

32

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

12.80 GPixel/s

184.8 GTexel/s

Texture Rate

25.60 GTexel/s

-

5.914 TFLOPS

FP32 (float)

819.2 GFLOPS

739.2 GFLOPS

FP64 (double)

51.20 GFLOPS

Board Design

275W

TDP

55W

600 W

Suggested PSU

250 W

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

Outputs

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

1x 6-pin + 1x 8-pin

Power Connectors

None

Graphics Processor

Grenada

GPU Name

Cape Verde

Grenada XT (215-0880004)

GPU Variant

Cape Verde PRO

GCN 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

6.2 billion

Transistors

1.5 billion

438 mm²

Die Size

123 mm²

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.0

OpenCL

1.2

Vulkan

1.2

-

6.3

Shader Model

5.1

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