AMD Radeon HD 7990 vs AMD Radeon RX Vega 64 Liquid Cooling

VS

AMD Radeon HD 7990

AMD Radeon RX Vega 64 Liquid Cooling

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7990 and 8GB VRAM Radeon RX Vega 64 Liquid Cooling to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX Vega 64 Liquid Cooling 's Advantages

Released 4 years and 4 months late

Boost Clock has increased by 68% (1677MHz vs 1000MHz)

More VRAM (8GB vs 3GB)

Larger VRAM bandwidth (483.8GB/s vs 288.0GB/s)

2048 additional rendering cores

Lower TDP (345W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 7990

4.096 TFLOPS

Radeon RX Vega 64 Liquid Cooling +235%

13.74 TFLOPS

Radeon HD 7990

VS

Radeon RX Vega 64 Liquid Cooling

Graphics Card

Apr 2013

Release Date

Aug 2017

Southern Islands

Generation

Vega

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

950 MHz

Base Clock

1406 MHz

1000 MHz

Boost Clock

1677 MHz

1500 MHz

Memory Clock

945 MHz

Memory

3GB

Memory Size

8GB

GDDR5

Memory Type

HBM2

384bit

Memory Bus

2048bit

288.0GB/s

Bandwidth

483.8GB/s

Render Config

32

Compute Units

64

-

2048

Shading Units

4096

128

TMUs

256

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

107.3 GPixel/s

128.0 GTexel/s

Texture Rate

429.3 GTexel/s

-

FP16 (half)

27.48 TFLOPS

4.096 TFLOPS

FP32 (float)

13.74 TFLOPS

1024 GFLOPS

FP64 (double)

858.6 GFLOPS

Board Design

375W

TDP

345W

750 W

Suggested PSU

700 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 10

Malta XT (215-0849026)

GPU Variant

Vega 10 XTX

GCN 1.0

Architecture

GCN 5.0

TSMC

Foundry

GlobalFoundries

28 nm

Process Size

14 nm

4.313 billion

Transistors

12.5 billion

365 mm²

Die Size

495 mm²

Graphics Features

12 (11_1)

DirectX

12 (12_1)

4.6

OpenGL

4.6

1.2

OpenCL

2.1

1.2

Vulkan

1.2

-

5.1

Shader Model

6.4

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