AMD Radeon HD 7990 vs AMD Radeon VII

VS

AMD Radeon HD 7990

AMD Radeon VII

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7990 and 16GB VRAM Radeon VII to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon VII 's Advantages

Released 5 years and 10 months late

Boost Clock has increased by 75% (1750MHz vs 1000MHz)

More VRAM (16GB vs 3GB)

Larger VRAM bandwidth (1020GB/s vs 288.0GB/s)

1792 additional rendering cores

Lower TDP (295W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 7990

4.096 TFLOPS

Radeon VII +228%

13.44 TFLOPS

Radeon HD 7990

VS

Radeon VII

Graphics Card

Apr 2013

Release Date

Feb 2019

Southern Islands

Generation

Vega II

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

950 MHz

Base Clock

1400 MHz

1000 MHz

Boost Clock

1750 MHz

1500 MHz

Memory Clock

1000 MHz

Memory

3GB

Memory Size

16GB

GDDR5

Memory Type

HBM2

384bit

Memory Bus

4096bit

288.0GB/s

Bandwidth

1020GB/s

Render Config

32

Compute Units

60

-

2048

Shading Units

3840

128

TMUs

240

32

ROPs

64

-

16 KB (per CU)

L1 Cache

16 KB (per CU)

768 KB

L2 Cache

4 MB

-

Theoretical Performance

32.00 GPixel/s

Pixel Rate

112.0 GPixel/s

128.0 GTexel/s

Texture Rate

420.0 GTexel/s

-

FP16 (half)

26.88 TFLOPS

4.096 TFLOPS

FP32 (float)

13.44 TFLOPS

1024 GFLOPS

FP64 (double)

3.360 TFLOPS

Board Design

375W

TDP

295W

750 W

Suggested PSU

600 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

1x HDMI 2.0b 3x DisplayPort 1.4a

2x 8-pin

Power Connectors

2x 8-pin

Graphics Processor

Malta

GPU Name

Vega 20

Malta XT (215-0849026)

GPU Variant

Vega 20 XT

GCN 1.0

Architecture

GCN 5.1

TSMC

Foundry

TSMC

28 nm

Process Size

7 nm

4.313 billion

Transistors

13.23 billion

365 mm²

Die Size

331 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_1)

4.6

OpenGL

4.6

1.2

OpenCL

2.1

1.2

Vulkan

1.3

-

5.1

Shader Model

6.7

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