AMD Radeon RX 6750 GRE vs AMD Radeon R9 255 OEM

VS

AMD Radeon RX 6750 GRE

AMD Radeon R9 255 OEM

We compared two Desktop platform GPUs: 12GB VRAM Radeon RX 6750 GRE 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 6750 GRE 's Advantages

Released 9 years and 10 months late

Boost Clock has increased by 178% (2581MHz vs 930MHz)

More VRAM (12GB vs 2GB)

Larger VRAM bandwidth (432.0GB/s vs 73.60GB/s)

2048 additional rendering cores

AMD Radeon R9 255 OEM 's Advantages

Lower TDP (65W vs 250W)

Score

Benchmark

FP32 (float)

Radeon RX 6750 GRE +1287%

13.21 TFLOPS

Radeon R9 255 OEM

0.952 TFLOPS

Radeon RX 6750 GRE

VS

Radeon R9 255 OEM

Graphics Card

Oct 2023

Release Date

Dec 2013

Navi II

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

2321 MHz

Base Clock

900 MHz

2581 MHz

Boost Clock

930 MHz

2250 MHz

Memory Clock

1150 MHz

Memory

12GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

192bit

Memory Bus

128bit

432.0GB/s

Bandwidth

73.60GB/s

Render Config

40

Compute Units

8

-

2560

Shading Units

512

160

TMUs

32

64

ROPs

16

-

40

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

3 MB

L2 Cache

256 KB

96 MB

L3 Cache

-

Theoretical Performance

165.2 GPixel/s

Pixel Rate

14.88 GPixel/s

413.0 GTexel/s

Texture Rate

29.76 GTexel/s

26.43 TFLOPS

FP16 (half)

-

13.21 TFLOPS

FP32 (float)

952.3 GFLOPS

825.9 GFLOPS

FP64 (double)

59.52 GFLOPS

Board Design

250W

TDP

65W

600 W

Suggested PSU

250 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

No outputs

1x 6-pin + 1x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Navi 22

GPU Name

Cape Verde

Navi 22 KXT

GPU Variant

Cape Verde PRX

RDNA 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

17.2 billion

Transistors

1.5 billion

335 mm²

Die Size

123 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

1.3

Vulkan

1.2

-

6.7

Shader Model

5.1

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