AMD Radeon RX 7700 XT vs AMD Radeon HD 6990

VS

AMD Radeon RX 7700 XT AMD Radeon HD 6990

We compared two Desktop platform GPUs: 12GB VRAM Radeon RX 7700 XT and 2GB VRAM Radeon HD 6990 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7700 XT 's Advantages

Released 12 years and 5 months late

Boost Clock2544MHz

More VRAM (12GB vs 2GB)

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

1920 additional rendering cores

Lower TDP (245W vs 375W)

Score

Benchmark

FP32 (float)

Radeon RX 7700 XT +1279%

35.17 TFLOPS

Radeon HD 6990

2.55 TFLOPS

Radeon RX 7700 XT

VS

Radeon HD 6990

Graphics Card

Aug 2023

Release Date

Mar 2011

Navi III

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1435 MHz

Base Clock

-

2544 MHz

Boost Clock

-

2250 MHz

Memory Clock

1250 MHz

Memory

12GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

192bit

Memory Bus

256bit

432.0GB/s

Bandwidth

160.0GB/s

Render Config

-

SM Count

-

54

Compute Units

24

3456

Shading Units

1536

216

TMUs

96

ROPs

32

-

Tensor Cores

-

54

RT Cores

-

128 KB per Array

L1 Cache

8 KB (per CU)

2 MB

L2 Cache

512 KB

Theoretical Performance

244.2 GPixel/s

Pixel Rate

26.56 GPixel/s

549.5 GTexel/s

Texture Rate

79.68 GTexel/s

70.34 TFLOPS

FP16 (half)

-

35.17 TFLOPS

FP32 (float)

2.550 TFLOPS

1099 GFLOPS

FP64 (double)

637.4 GFLOPS

Graphics Processor

Navi 32

GPU Name

Antilles

Navi 32 XL (215-180000076)

GPU Variant

Antilles XT (215-0807027)

RDNA 3.0

Architecture

TeraScale 3

TSMC

Foundry

TSMC

5 nm

Process Size

40 nm

28.1 billion

Transistors

2.64 billion

346 mm²

Die Size

389 mm²

Board Design

245W

TDP

375W

550 W

Suggested PSU

750 W

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

Outputs

1x DVI 4x mini-DisplayPort 1.2

2x 8-pin

Power Connectors

2x 8-pin

Graphics Features

12 Ultimate (12_2)

DirectX

11.2 (11_0)

4.6

OpenGL

4.4

2.2

OpenCL

1.2

1.3

Vulkan

N/A

-

CUDA

-

6.7

Shader Model

5.0

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