AMD Radeon R5 340X OEM vs AMD Radeon HD 7990

VS

AMD Radeon R5 340X OEM

AMD Radeon HD 7990

We compared two Desktop platform GPUs: 2GB VRAM Radeon R5 340X OEM and 3GB VRAM Radeon HD 7990 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R5 340X OEM 's Advantages

Released 2 years and 1 months late

Lower TDP (65W vs 375W)

AMD Radeon HD 7990 's Advantages

Boost Clock1000MHz

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (288.0GB/s vs 16.00GB/s)

1664 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R5 340X OEM

0.691 TFLOPS

Radeon HD 7990 +492%

4.096 TFLOPS

Radeon R5 340X OEM

VS

Radeon HD 7990

Graphics Card

May 2015

Release Date

Apr 2013

Pirate Islands

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 3.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

950 MHz

-

Boost Clock

1000 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

3GB

DDR3

Memory Type

GDDR5

64bit

Memory Bus

384bit

16.00GB/s

Bandwidth

288.0GB/s

Render Config

6

Compute Units

32

-

384

Shading Units

2048

24

TMUs

128

8

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

128 KB

L2 Cache

768 KB

-

Theoretical Performance

7.200 GPixel/s

Pixel Rate

32.00 GPixel/s

21.60 GTexel/s

Texture Rate

128.0 GTexel/s

-

691.2 GFLOPS

FP32 (float)

4.096 TFLOPS

43.20 GFLOPS

FP64 (double)

1024 GFLOPS

Board Design

65W

TDP

375W

250 W

Suggested PSU

750 W

1x DVI 1x DisplayPort 1.2

Outputs

1x DVI 4x mini-DisplayPort 1.2

None

Power Connectors

2x 8-pin

Graphics Processor

Oland

GPU Name

Malta

Oland XT (215-0837000)

GPU Variant

Malta XT (215-0849026)

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

0.95 billion

Transistors

4.313 billion

77 mm²

Die Size

365 mm²

Graphics Features

12 (11_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.2

OpenCL

1.2

Vulkan

1.2

-

5.1

Shader Model

5.1

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