AMD Radeon RX 7800 XT vs AMD Radeon R9 285X

VS

AMD Radeon RX 7800 XT AMD Radeon R9 285X

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 7800 XT and 3GB VRAM Radeon R9 285X to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7800 XT 's Advantages

Boost Clock2430MHz

More VRAM (16GB vs 3GB)

Larger VRAM bandwidth (624.1GB/s vs 264.0GB/s)

1792 additional rendering cores

AMD Radeon R9 285X 's Advantages

Lower TDP (200W vs 263W)

Score

Benchmark

FP32 (float)

Radeon RX 7800 XT +809%

37.32 TFLOPS

Radeon R9 285X

4.104 TFLOPS

Radeon RX 7800 XT

VS

Radeon R9 285X

Graphics Card

Aug 2023

Release Date

Unknown

Navi III

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1295 MHz

Base Clock

-

2430 MHz

Boost Clock

-

2438 MHz

Memory Clock

1375 MHz

Memory

16GB

Memory Size

3GB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

384bit

624.1GB/s

Bandwidth

264.0GB/s

Render Config

-

SM Count

-

60

Compute Units

32

3840

Shading Units

2048

240

TMUs

128

96

ROPs

32

-

Tensor Cores

-

60

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

4 MB

L2 Cache

768 KB

Theoretical Performance

233.3 GPixel/s

Pixel Rate

32.06 GPixel/s

583.2 GTexel/s

Texture Rate

128.3 GTexel/s

74.65 TFLOPS

FP16 (half)

-

37.32 TFLOPS

FP32 (float)

4.104 TFLOPS

1166 GFLOPS

FP64 (double)

-

Graphics Processor

Navi 32

GPU Name

Tonga

Navi 32 XT (215-180000006)

GPU Variant

Tonga XT (215-0851313)

RDNA 3.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

5 nm

Process Size

28 nm

28.1 billion

Transistors

5 billion

346 mm²

Die Size

366 mm²

Board Design

263W

TDP

200W

600 W

Suggested PSU

550 W

1x HDMI 2.1a 3x DisplayPort 2.1

Outputs

2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2

2x 8-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.2

OpenCL

2.0

1.3

Vulkan

1.2

-

CUDA

-

6.7

Shader Model

6.3

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