GPU Comparison

A

AMD

RADEON

AMD Radeon R5 M255

CORE STATE Topaz

VRAM 2 GB

CLOCK SPEED 940 MHz

TDP —

BUS WIDTH 128 bit

ARCHITECTURE GCN 3.0

nm

PROCESS 28 nm

LAUNCH DATE 2014

VS

A

AMD

RADEON

Radeon RX 7800 XT

CORE STATE Navi 32

VRAM 16 GB

CLOCK SPEED 2430 MHz

TDP 263 W

BUS WIDTH 256 bit

ARCHITECTURE RDNA 3.0

nm

PROCESS 5 nm

LAUNCH DATE 2023

PERFORMANCE BENCHMARKS

geekbench_opencl

4,680

139,381

3dmark_3dmark_steel_nomad_dx12

N/A

4,157

geekbench_vulkan

N/A

143,060

passmark_directx_10

N/A

121

passmark_directx_11

N/A

249

passmark_directx_12

N/A

93

passmark_directx_9

N/A

304

passmark_g2d

N/A

1,177

passmark_g3d

N/A

24,176

passmark_gpu_compute

N/A

13,473

DETAILED SPECIFICATIONS

SPECIFICATION

R5 M255

RX 7800 XT

Core Specs

Shading Units

384

3,840 +900.0%

Shaders

384

3,840 +900.0%

TMUs

24

240 +900.0%

ROPs

8

96 +1100.0%

Compute Units

6

60 +900.0%

Clocks

Base Clock

925 MHz

1295 MHz

Boost Clock

940 MHz

2430 MHz

Game Clock

—

2124 MHz

Memory Clock

1000 MHz 2 Gbps effective

2438 MHz 19.5 Gbps effective

Memory

Memory Size

2 GB

16 GB

VRAM (MB)

2,048

16,384 +700.0%

Memory Type

DDR3

GDDR6

Memory Bus

128 bit

256 bit

Bandwidth

32.00 GB/s

624.1 GB/s

Cache

L1 Cache

16 KB (per CU)

128 KB per Array

L2 Cache

256 KB

4 MB

L3 Cache

—

64 MB

L0 Cache

—

32 KB per WGP

Performance

Pixel Rate

7.520 GPixel/s

233.3 GPixel/s

Texture Rate

22.56 GTexel/s

583.2 GTexel/s

FP32 (TFLOPS)

721.9 GFLOPS

37.32 TFLOPS

FP64 (TFLOPS)

45.12 GFLOPS (1:16)

1,166.4 GFLOPS (1:32)

FP16 (TFLOPS)

721.9 GFLOPS (1:1)

74.65 TFLOPS (2:1)

AI/RT

RT Cores

—

60

Matrix Cores

—

120

Power

TDP

—

263 W

TDP (W)

—

263

Suggested PSU

—

600 W

Power Connectors

—

2x 8-pin

Architecture

Architecture

GCN 3.0

RDNA 3.0

GPU Name

Topaz

Navi 32

Codename

—

Wheat Nas

Generation

Gem System (R5 M200)

Navi III (RX 7000)

Process Size

28 nm

5 nm

Transistors

1,550 million

28,100 million

Die Size

125 mm²

346 mm²

Foundry

TSMC

TSMC

Density

12.4M / mm²

81.2M / mm²

API Support

DirectX

12 (12_0)

12 Ultimate (12_2)

OpenGL

4.6

4.6

Vulkan

1.2.170

1.4

OpenCL

2.1

2.2

Shader Model

6.5

6.8

Physical

Slot Width

—

Dual-slot

Length

—

267 mm 10.5 inches

Height

—

111 mm 4.4 inches

Outputs

—

1x HDMI 2.1a3x DisplayPort 2.1

Bus Interface

PCIe 3.0 x8

PCIe 4.0 x16

Other

Launch Price

—

499 USD

Production

End-of-life

Active

Predecessor

Solar System

Navi II

Successor

Polaris Mobile

Navi IV

View Radeon R5 M255 Details View Radeon RX 7800 XT Details