AMD Radeon R9 255 OEM vs AMD Radeon RX 7800 XT

VS

AMD Radeon R9 255 OEM

AMD Radeon RX 7800 XT

We compared two Desktop platform GPUs: 2GB VRAM Radeon R9 255 OEM and 16GB VRAM Radeon RX 7800 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon R9 255 OEM 's Advantages

Lower TDP (65W vs 263W)

AMD Radeon RX 7800 XT 's Advantages

Released 9 years and 8 months late

Boost Clock has increased by 161% (2430MHz vs 930MHz)

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (624.1GB/s vs 73.60GB/s)

3328 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon R9 255 OEM

0.952 TFLOPS

Radeon RX 7800 XT +3820%

37.32 TFLOPS

Radeon R9 255 OEM

VS

Radeon RX 7800 XT

Graphics Card

Dec 2013

Release Date

Aug 2023

Volcanic Islands

Generation

Navi III

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

900 MHz

Base Clock

1295 MHz

930 MHz

Boost Clock

2430 MHz

1150 MHz

Memory Clock

2438 MHz

Memory

2GB

Memory Size

16GB

GDDR5

Memory Type

GDDR6

128bit

Memory Bus

256bit

73.60GB/s

Bandwidth

624.1GB/s

Render Config

8

Compute Units

60

-

512

Shading Units

3840

32

TMUs

240

16

ROPs

96

-

RT Cores

60

16 KB (per CU)

L1 Cache

128 KB per Array

256 KB

L2 Cache

4 MB

-

L3 Cache

64 MB

Theoretical Performance

14.88 GPixel/s

Pixel Rate

233.3 GPixel/s

29.76 GTexel/s

Texture Rate

583.2 GTexel/s

-

FP16 (half)

74.65 TFLOPS

952.3 GFLOPS

FP32 (float)

37.32 TFLOPS

59.52 GFLOPS

FP64 (double)

1166 GFLOPS

Board Design

65W

TDP

263W

250 W

Suggested PSU

600 W

No outputs

Outputs

1x HDMI 2.1a 3x DisplayPort 2.1

1x 6-pin

Power Connectors

2x 8-pin

Graphics Processor

Cape Verde

GPU Name

Navi 32

Cape Verde PRX

GPU Variant

Navi 32 XT (215-180000006)

GCN 1.0

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

5 nm

1.5 billion

Transistors

28.1 billion

123 mm²

Die Size

346 mm²

Graphics Features

12 (11_1)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

1.2

OpenCL

2.2

1.2

Vulkan

1.3

-

5.1

Shader Model

6.7

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