AMD Radeon HD 7990 vs AMD Radeon R5 340X OEM

VS

AMD Radeon HD 7990 AMD Radeon R5 340X OEM

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

Main Differences

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

AMD Radeon R5 340X OEM 's Advantages

Released 2 years and 1 months late

Lower TDP (65W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 7990 +492%

4.096 TFLOPS

Radeon R5 340X OEM

0.691 TFLOPS

Radeon HD 7990

VS

Radeon R5 340X OEM

Graphics Card

Apr 2013

Release Date

May 2015

Southern Islands

Generation

Pirate Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x8

Clock Speeds

950 MHz

Base Clock

-

1000 MHz

Boost Clock

-

1500 MHz

Memory Clock

1000 MHz

Memory

3GB

Memory Size

2GB

GDDR5

Memory Type

DDR3

384bit

Memory Bus

64bit

288.0GB/s

Bandwidth

16.00GB/s

Render Config

-

SM Count

-

32

Compute Units

6

2048

Shading Units

384

128

TMUs

24

32

ROPs

8

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

768 KB

L2 Cache

128 KB

Theoretical Performance

32.00 GPixel/s

Pixel Rate

7.200 GPixel/s

128.0 GTexel/s

Texture Rate

21.60 GTexel/s

-

FP16 (half)

-

4.096 TFLOPS

FP32 (float)

691.2 GFLOPS

1024 GFLOPS

FP64 (double)

43.20 GFLOPS

Graphics Processor

Malta

GPU Name

Oland

Malta XT (215-0849026)

GPU Variant

Oland XT (215-0837000)

GCN 1.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

28 nm

Process Size

28 nm

4.313 billion

Transistors

0.95 billion

365 mm²

Die Size

77 mm²

Board Design

375W

TDP

65W

750 W

Suggested PSU

250 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

1x DVI 1x DisplayPort 1.2

2x 8-pin

Power Connectors

None

Graphics Features

12 (11_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

1.2

OpenCL

1.2

Vulkan

1.2

-

CUDA

-

5.1

Shader Model

5.1

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