AMD Radeon RX 7900 XTX vs AMD Radeon R9 255 OEM

VS

AMD Radeon RX 7900 XTX

AMD Radeon R9 255 OEM

We compared two Desktop platform GPUs: 24GB VRAM Radeon RX 7900 XTX and 2GB VRAM Radeon R9 255 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7900 XTX 's Advantages

Released 8 years and 11 months late

Boost Clock has increased by 169% (2498MHz vs 930MHz)

More VRAM (24GB vs 2GB)

Larger VRAM bandwidth (960.0GB/s vs 73.60GB/s)

5632 additional rendering cores

AMD Radeon R9 255 OEM 's Advantages

Lower TDP (65W vs 355W)

Score

Benchmark

FP32 (float)

Radeon RX 7900 XTX +6348%

61.39 TFLOPS

Radeon R9 255 OEM

0.952 TFLOPS

Radeon RX 7900 XTX

VS

Radeon R9 255 OEM

Graphics Card

Nov 2022

Release Date

Dec 2013

Navi III

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1929 MHz

Base Clock

900 MHz

2498 MHz

Boost Clock

930 MHz

2500 MHz

Memory Clock

1150 MHz

Memory

24GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

384bit

Memory Bus

128bit

960.0GB/s

Bandwidth

73.60GB/s

Render Config

96

Compute Units

8

-

6144

Shading Units

512

384

TMUs

32

192

ROPs

16

-

96

RT Cores

-

256 KB per Array

L1 Cache

16 KB (per CU)

6 MB

L2 Cache

256 KB

96 MB

L3 Cache

-

Theoretical Performance

479.6 GPixel/s

Pixel Rate

14.88 GPixel/s

959.2 GTexel/s

Texture Rate

29.76 GTexel/s

122.8 TFLOPS

FP16 (half)

-

61.39 TFLOPS

FP32 (float)

952.3 GFLOPS

1.918 TFLOPS

FP64 (double)

59.52 GFLOPS

Board Design

355W

TDP

65W

750 W

Suggested PSU

250 W

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

Outputs

No outputs

2x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Navi 31

GPU Name

Cape Verde

Navi 31 XTX (215-145000146)

GPU Variant

Cape Verde PRX

RDNA 3.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

5 nm

Process Size

28 nm

57.7 billion

Transistors

1.5 billion

529 mm²

Die Size

123 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.2

OpenCL

1.2

1.3

Vulkan

1.2

-

6.7

Shader Model

5.1

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