AMD Radeon HD 6990 vs AMD Radeon RX 6750 XT

VS

AMD Radeon HD 6990

AMD Radeon RX 6750 XT

We compared two Desktop platform GPUs: 2GB VRAM Radeon HD 6990 and 12GB VRAM Radeon RX 6750 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6750 XT 's Advantages

Released 11 years late

Boost Clock2600MHz

More VRAM (12GB vs 2GB)

Larger VRAM bandwidth (432.0GB/s vs 160.0GB/s)

1024 additional rendering cores

Lower TDP (250W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 6990

2.55 TFLOPS

Radeon RX 6750 XT +421%

13.31 TFLOPS

Radeon HD 6990

VS

Radeon RX 6750 XT

Graphics Card

Mar 2011

Release Date

Mar 2022

Northern Islands

Generation

Navi II

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

2150 MHz

-

Boost Clock

2600 MHz

1250 MHz

Memory Clock

2250 MHz

Memory

2GB

Memory Size

12GB

GDDR5

Memory Type

GDDR6

256bit

Memory Bus

192bit

160.0GB/s

Bandwidth

432.0GB/s

Render Config

24

Compute Units

40

-

1536

Shading Units

2560

96

TMUs

160

32

ROPs

64

-

RT Cores

40

8 KB (per CU)

L1 Cache

128 KB per Array

512 KB

L2 Cache

3 MB

-

L3 Cache

96 MB

Theoretical Performance

26.56 GPixel/s

Pixel Rate

166.4 GPixel/s

79.68 GTexel/s

Texture Rate

416.0 GTexel/s

-

FP16 (half)

26.62 TFLOPS

2.550 TFLOPS

FP32 (float)

13.31 TFLOPS

637.4 GFLOPS

FP64 (double)

832.0 GFLOPS

Board Design

375W

TDP

250W

750 W

Suggested PSU

600 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

1x HDMI 2.1 3x DisplayPort 1.4a

2x 8-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Antilles

GPU Name

Navi 22

Antilles XT (215-0807027)

GPU Variant

Navi 22 KXT (215-127000144)

TeraScale 3

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

7 nm

2.64 billion

Transistors

17.2 billion

389 mm²

Die Size

335 mm²

Graphics Features

11.2 (11_0)

DirectX

12 Ultimate (12_2)

4.4

OpenGL

4.6

1.2

OpenCL

2.1

N/A

Vulkan

1.3

-

5.0

Shader Model

6.5

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