AMD Radeon RX 560 XT vs AMD Radeon HD 7990

VS

We compared two Desktop platform GPUs: 4GB VRAM Radeon RX 560 XT 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 RX 560 XT 's Advantages

Released 5 years and 11 months late

Boost Clock has increased by 23% (1226MHz vs 1000MHz)

More VRAM (4GB vs 3GB)

Lower TDP (150W vs 375W)

AMD Radeon HD 7990 's Advantages

Larger VRAM bandwidth (288.0GB/s vs 224.0GB/s)

256 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 560 XT +7%

4.394 TFLOPS

Radeon HD 7990

4.096 TFLOPS

Radeon RX 560 XT

VS

Radeon HD 7990

Graphics Card

Mar 2019

Release Date

Apr 2013

Polaris

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1074 MHz

Base Clock

950 MHz

1226 MHz

Boost Clock

1000 MHz

1750 MHz

Memory Clock

1500 MHz

Memory

4GB

Memory Size

3GB

GDDR5

Memory Type

GDDR5

256bit

Memory Bus

384bit

224.0GB/s

Bandwidth

288.0GB/s

Render Config

-

SM Count

-

28

Compute Units

32

1792

Shading Units

2048

112

TMUs

128

32

ROPs

32

-

Tensor Cores

-

RT Cores

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

768 KB

Theoretical Performance

39.23 GPixel/s

Pixel Rate

32.00 GPixel/s

137.3 GTexel/s

Texture Rate

128.0 GTexel/s

4.394 TFLOPS

FP16 (half)

-

4.394 TFLOPS

FP32 (float)

4.096 TFLOPS

274.6 GFLOPS

FP64 (double)

1024 GFLOPS

Graphics Processor

Ellesmere

GPU Name

Malta

Polaris 10 LE1

GPU Variant

Malta XT (215-0849026)

GCN 4.0

Architecture

GCN 1.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

5.7 billion

Transistors

4.313 billion

232 mm²

Die Size

365 mm²

Board Design

150W

TDP

375W

450 W

Suggested PSU

750 W

1x HDMI 2.0b 3x DisplayPort 1.4a

Outputs

1x DVI 4x mini-DisplayPort 1.2

1x 6-pin

Power Connectors

2x 8-pin

Graphics Features

12 (12_0)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

Vulkan

1.2

-

CUDA

-

6.4

Shader Model

5.1

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