AMD Radeon RX Vega 56 vs AMD Radeon HD 7990

VS

AMD Radeon RX Vega 56

AMD Radeon HD 7990

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX Vega 56 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 Vega 56 's Advantages

Released 4 years and 4 months late

Boost Clock has increased by 47% (1471MHz vs 1000MHz)

More VRAM (8GB vs 3GB)

Larger VRAM bandwidth (409.6GB/s vs 288.0GB/s)

1536 additional rendering cores

Lower TDP (210W vs 375W)

Score

Benchmark

FP32 (float)

Radeon RX Vega 56 +157%

10.54 TFLOPS

Radeon HD 7990

4.096 TFLOPS

Radeon RX Vega 56

VS

Radeon HD 7990

Graphics Card

Aug 2017

Release Date

Apr 2013

Vega

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1156 MHz

Base Clock

950 MHz

1471 MHz

Boost Clock

1000 MHz

800 MHz

Memory Clock

1500 MHz

Memory

8GB

Memory Size

3GB

HBM2

Memory Type

GDDR5

2048bit

Memory Bus

384bit

409.6GB/s

Bandwidth

288.0GB/s

Render Config

56

Compute Units

32

-

3584

Shading Units

2048

224

TMUs

128

64

ROPs

32

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

4 MB

L2 Cache

768 KB

-

Theoretical Performance

94.14 GPixel/s

Pixel Rate

32.00 GPixel/s

329.5 GTexel/s

Texture Rate

128.0 GTexel/s

21.09 TFLOPS

FP16 (half)

-

10.54 TFLOPS

FP32 (float)

4.096 TFLOPS

659.0 GFLOPS

FP64 (double)

1024 GFLOPS

Board Design

210W

TDP

375W

550 W

Suggested PSU

750 W

1x HDMI 2.0b 3x DisplayPort 1.4a

Outputs

1x DVI 4x mini-DisplayPort 1.2

2x 8-pin

Power Connectors

2x 8-pin

Graphics Processor

Vega 10

GPU Name

Malta

Vega 10 XL (215-0894216)

GPU Variant

Malta XT (215-0849026)

GCN 5.0

Architecture

GCN 1.0

GlobalFoundries

Foundry

TSMC

14 nm

Process Size

28 nm

12.5 billion

Transistors

4.313 billion

495 mm²

Die Size

365 mm²

Graphics Features

12 (12_1)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

Vulkan

1.2

-

6.4

Shader Model

5.1

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