AMD Radeon HD 6490 vs AMD Radeon RX 7990 XTX

VS

AMD Radeon HD 6490

AMD Radeon RX 7990 XTX

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6490 and 24GB VRAM Radeon RX 7990 XTX to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6490 's Advantages

Lower TDP (39W vs 405W)

AMD Radeon RX 7990 XTX 's Advantages

Boost Clock3599MHz

More VRAM (24GB vs 1024GB)

Larger VRAM bandwidth (1152GB/s vs 16.00GB/s)

5824 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6490

0.352 TFLOPS

Radeon RX 7990 XTX +25027%

88.45 TFLOPS

Radeon HD 6490

VS

Radeon RX 7990 XTX

Graphics Card

Jul 2011

Release Date

Unknown

Northern Islands

Generation

Navi III

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

2500 MHz

-

Boost Clock

3599 MHz

500 MHz

Memory Clock

3000 MHz

Memory

1024MB

Memory Size

24GB

DDR2

Memory Type

GDDR6

128bit

Memory Bus

384bit

16.00GB/s

Bandwidth

1152GB/s

Render Config

4

Compute Units

96

-

320

Shading Units

6144

16

TMUs

384

8

ROPs

192

-

RT Cores

96

8 KB (per CU)

L1 Cache

256 KB per Array

256 KB

L2 Cache

6 MB

-

L3 Cache

192 MB

Theoretical Performance

4.400 GPixel/s

Pixel Rate

691.0 GPixel/s

8.800 GTexel/s

Texture Rate

1382 GTexel/s

-

FP16 (half)

176.9 TFLOPS

352.0 GFLOPS

FP32 (float)

88.45 TFLOPS

-

FP64 (double)

2.764 TFLOPS

Board Design

39W

TDP

405W

200 W

Suggested PSU

800 W

1x DVI 1x HDMI 1.3a 1x VGA

Outputs

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

None

Power Connectors

3x 8-pin

Graphics Processor

Redwood

GPU Name

Navi 31

Redwood LE

GPU Variant

Navi 31 XTX+

TeraScale 2

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

40 nm

Process Size

5 nm

0.627 billion

Transistors

57.7 billion

104 mm²

Die Size

529 mm²

Graphics Features

11.2 (11_0)

DirectX

12 Ultimate (12_2)

4.4

OpenGL

4.6

1.2

OpenCL

2.2

N/A

Vulkan

1.3

-

5.0

Shader Model

6.7

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