AMD Radeon HD 7990 vs AMD Radeon RX 6700

VS

AMD Radeon HD 7990

AMD Radeon RX 6700

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 7990 and 10GB VRAM Radeon RX 6700 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6700 's Advantages

Released 8 years and 2 months late

Boost Clock has increased by 145% (2450MHz vs 1000MHz)

More VRAM (10GB vs 3GB)

Larger VRAM bandwidth (320.0GB/s vs 288.0GB/s)

256 additional rendering cores

Lower TDP (175W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 7990

4.096 TFLOPS

Radeon RX 6700 +175%

11.29 TFLOPS

Radeon HD 7990

VS

Radeon RX 6700

Graphics Card

Apr 2013

Release Date

Jun 2021

Southern Islands

Generation

Navi II

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

950 MHz

Base Clock

1941 MHz

1000 MHz

Boost Clock

2450 MHz

1500 MHz

Memory Clock

2000 MHz

Memory

3GB

Memory Size

10GB

GDDR5

Memory Type

GDDR6

384bit

Memory Bus

160bit

288.0GB/s

Bandwidth

320.0GB/s

Render Config

32

Compute Units

36

-

2048

Shading Units

2304

128

TMUs

144

32

ROPs

64

-

RT Cores

36

16 KB (per CU)

L1 Cache

128 KB per Array

768 KB

L2 Cache

3 MB

-

L3 Cache

80 MB

Theoretical Performance

32.00 GPixel/s

Pixel Rate

156.8 GPixel/s

128.0 GTexel/s

Texture Rate

352.8 GTexel/s

-

FP16 (half)

22.58 TFLOPS

4.096 TFLOPS

FP32 (float)

11.29 TFLOPS

1024 GFLOPS

FP64 (double)

705.6 GFLOPS

Board Design

375W

TDP

175W

750 W

Suggested PSU

450 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C

2x 8-pin

Power Connectors

1x 8-pin

Graphics Processor

Malta

GPU Name

Navi 22

Malta XT (215-0849026)

GPU Variant

Navi 22 XTL

GCN 1.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

7 nm

4.313 billion

Transistors

17.2 billion

365 mm²

Die Size

335 mm²

Graphics Features

12 (11_1)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

1.2

OpenCL

2.1

1.2

Vulkan

1.3

-

5.1

Shader Model

6.5

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