AMD Radeon RX 7990 XTX vs AMD Radeon R9 285X

VS

AMD Radeon RX 7990 XTX

AMD Radeon R9 285X

We compared two Desktop platform GPUs: 24GB VRAM Radeon RX 7990 XTX 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 7990 XTX 's Advantages

Boost Clock3599MHz

More VRAM (24GB vs 3GB)

Larger VRAM bandwidth (1152GB/s vs 264.0GB/s)

4096 additional rendering cores

AMD Radeon R9 285X 's Advantages

Lower TDP (200W vs 405W)

Score

Benchmark

FP32 (float)

Radeon RX 7990 XTX +2055%

88.45 TFLOPS

Radeon R9 285X

4.104 TFLOPS

Radeon RX 7990 XTX

VS

Radeon R9 285X

Graphics Card

Unknown

Release Date

Unknown

Navi III

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

2500 MHz

Base Clock

-

3599 MHz

Boost Clock

-

3000 MHz

Memory Clock

1375 MHz

Memory

24GB

Memory Size

3GB

GDDR6

Memory Type

GDDR5

384bit

Memory Bus

384bit

1152GB/s

Bandwidth

264.0GB/s

Render Config

96

Compute Units

32

-

6144

Shading Units

2048

384

TMUs

128

192

ROPs

32

-

96

RT Cores

-

256 KB per Array

L1 Cache

16 KB (per CU)

6 MB

L2 Cache

768 KB

192 MB

L3 Cache

-

Theoretical Performance

691.0 GPixel/s

Pixel Rate

32.06 GPixel/s

1382 GTexel/s

Texture Rate

128.3 GTexel/s

176.9 TFLOPS

FP16 (half)

-

88.45 TFLOPS

FP32 (float)

4.104 TFLOPS

2.764 TFLOPS

FP64 (double)

-

Board Design

405W

TDP

200W

800 W

Suggested PSU

550 W

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

Outputs

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

3x 8-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Navi 31

GPU Name

Tonga

Navi 31 XTX+

GPU Variant

Tonga XT (215-0851313)

RDNA 3.0

Architecture

GCN 3.0

TSMC

Foundry

TSMC

5 nm

Process Size

28 nm

57.7 billion

Transistors

5 billion

529 mm²

Die Size

366 mm²

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

-

6.7

Shader Model

6.3

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