AMD Radeon R7 340 OEM vs AMD Radeon HD 7990

VS

AMD Radeon R7 340 OEM AMD Radeon HD 7990

We compared two Desktop platform GPUs: 2GB VRAM Radeon R7 340 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 R7 340 OEM 's Advantages

Released 2 years and 1 months late

Lower TDP (50W vs 375W)

AMD Radeon HD 7990 's Advantages

Boost Clock has increased by 28% (1000MHz vs 780MHz)

More VRAM (3GB vs 2GB)

Larger VRAM bandwidth (288.0GB/s vs 64.00GB/s)

1664 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R7 340 OEM

0.599 TFLOPS

Radeon HD 7990 +583%

4.096 TFLOPS

Radeon R7 340 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

730 MHz

Base Clock

950 MHz

780 MHz

Boost Clock

1000 MHz

Memory Clock

1500 MHz

Memory

2GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

128bit

Memory Bus

384bit

64.00GB/s

Bandwidth

288.0GB/s

Render Config

-

SM Count

-

6

Compute Units

32

384

Shading Units

2048

24

TMUs

128

8

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

256 KB

L2 Cache

768 KB

Theoretical Performance

6.240 GPixel/s

Pixel Rate

32.00 GPixel/s

18.72 GTexel/s

Texture Rate

128.0 GTexel/s

-

FP16 (half)

-

599.0 GFLOPS

FP32 (float)

4.096 TFLOPS

37.44 GFLOPS

FP64 (double)

1024 GFLOPS

Graphics Processor

Oland

GPU Name

Malta

-

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

Board Design

50W

TDP

375W

250 W

Suggested PSU

750 W

1x DVI 1x HDMI 1.4a 1x VGA

Outputs

1x DVI 4x mini-DisplayPort 1.2

None

Power Connectors

2x 8-pin

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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