AMD Radeon HD 6990 vs AMD Radeon VII

VS

AMD Radeon HD 6990

AMD Radeon VII

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6990 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 7 years and 11 months late

Boost Clock1750MHz

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (1020GB/s vs 160.0GB/s)

2304 additional rendering cores

Lower TDP (295W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 6990

2.55 TFLOPS

Radeon VII +427%

13.44 TFLOPS

Radeon HD 6990

VS

Radeon VII

Graphics Card

Mar 2011

Release Date

Feb 2019

Northern Islands

Generation

Vega II

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

-

Base Clock

1400 MHz

-

Boost Clock

1750 MHz

1250 MHz

Memory Clock

1000 MHz

Memory

2GB

Memory Size

16GB

GDDR5

Memory Type

HBM2

256bit

Memory Bus

4096bit

160.0GB/s

Bandwidth

1020GB/s

Render Config

24

Compute Units

60

-

1536

Shading Units

3840

96

TMUs

240

32

ROPs

64

-

8 KB (per CU)

L1 Cache

16 KB (per CU)

512 KB

L2 Cache

4 MB

-

Theoretical Performance

26.56 GPixel/s

Pixel Rate

112.0 GPixel/s

79.68 GTexel/s

Texture Rate

420.0 GTexel/s

-

FP16 (half)

26.88 TFLOPS

2.550 TFLOPS

FP32 (float)

13.44 TFLOPS

637.4 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

Antilles

GPU Name

Vega 20

Antilles XT (215-0807027)

GPU Variant

Vega 20 XT

TeraScale 3

Architecture

GCN 5.1

TSMC

Foundry

TSMC

40 nm

Process Size

7 nm

2.64 billion

Transistors

13.23 billion

389 mm²

Die Size

331 mm²

Graphics Features

11.2 (11_0)

DirectX

12 (12_1)

4.4

OpenGL

4.6

1.2

OpenCL

2.1

N/A

Vulkan

1.3

-

5.0

Shader Model

6.7

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