AMD Radeon RX 7990 XTX vs AMD Radeon HD 6450 OEM

VS

AMD Radeon RX 7990 XTX AMD Radeon HD 6450 OEM

We compared two Desktop platform GPUs: 24GB VRAM Radeon RX 7990 XTX and 512MB VRAM Radeon HD 6450 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7990 XTX 's Advantages

Boost Clock3599MHz

Larger VRAM bandwidth (1152GB/s vs 8.528GB/s)

5984 additional rendering cores

AMD Radeon HD 6450 OEM 's Advantages

Lower TDP (18W vs 405W)

Score

Benchmark

FP32 (float)

Radeon RX 7990 XTX +44125%

88.45 TFLOPS

Radeon HD 6450 OEM

0.2 TFLOPS

Radeon RX 7990 XTX

VS

Radeon HD 6450 OEM

Graphics Card

Unknown

Release Date

Feb 2011

Navi III

Generation

Northern Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

2500 MHz

Base Clock

-

3599 MHz

Boost Clock

-

3000 MHz

Memory Clock

533 MHz

Memory

24GB

Memory Size

512MB

GDDR6

Memory Type

GDDR3

384bit

Memory Bus

64bit

1152GB/s

Bandwidth

8.528GB/s

Render Config

-

SM Count

-

96

Compute Units

2

6144

Shading Units

160

384

TMUs

8

192

ROPs

4

-

Tensor Cores

-

96

RT Cores

-

256 KB per Array

L1 Cache

8 KB (per CU)

6 MB

L2 Cache

128 KB

Theoretical Performance

691.0 GPixel/s

Pixel Rate

2.500 GPixel/s

1382 GTexel/s

Texture Rate

5.000 GTexel/s

176.9 TFLOPS

FP16 (half)

-

88.45 TFLOPS

FP32 (float)

200.0 GFLOPS

2.764 TFLOPS

FP64 (double)

-

Graphics Processor

Navi 31

GPU Name

Caicos

Navi 31 XTX+

GPU Variant

Junbonator

RDNA 3.0

Architecture

TeraScale 2

TSMC

Foundry

TSMC

5 nm

Process Size

40 nm

57.7 billion

Transistors

0.37 billion

529 mm²

Die Size

67 mm²

Board Design

405W

TDP

18W

800 W

Suggested PSU

200 W

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

Outputs

1x DVI 1x HDMI 1.3a 1x VGA

3x 8-pin

Power Connectors

None

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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