AMD Radeon RX 6900 XTX vs AMD Radeon R9 255 OEM

VS

AMD Radeon RX 6900 XTX AMD Radeon R9 255 OEM

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6900 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 6900 XTX 's Advantages

Boost Clock has increased by 162% (2435MHz vs 930MHz)

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (576.0GB/s vs 73.60GB/s)

4608 additional rendering cores

AMD Radeon R9 255 OEM 's Advantages

Lower TDP (65W vs 330W)

Score

Benchmark

FP32 (float)

Radeon RX 6900 XTX +2518%

24.93 TFLOPS

Radeon R9 255 OEM

0.952 TFLOPS

Radeon RX 6900 XTX

VS

Radeon R9 255 OEM

Graphics Card

Unknown

Release Date

Dec 2013

Navi II

Generation

Volcanic Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

2075 MHz

Base Clock

900 MHz

2435 MHz

Boost Clock

930 MHz

2250 MHz

Memory Clock

1150 MHz

Memory

16GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

128bit

576.0GB/s

Bandwidth

73.60GB/s

Render Config

-

SM Count

-

80

Compute Units

8

5120

Shading Units

512

320

TMUs

32

128

ROPs

16

-

Tensor Cores

-

80

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

4 MB

L2 Cache

256 KB

Theoretical Performance

311.7 GPixel/s

Pixel Rate

14.88 GPixel/s

779.2 GTexel/s

Texture Rate

29.76 GTexel/s

49.87 TFLOPS

FP16 (half)

-

24.93 TFLOPS

FP32 (float)

952.3 GFLOPS

1.558 TFLOPS

FP64 (double)

59.52 GFLOPS

Graphics Processor

Navi 21

GPU Name

Cape Verde

Navi 21 XTXH (215-121000247)

GPU Variant

Cape Verde PRX

RDNA 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

26.8 billion

Transistors

1.5 billion

520 mm²

Die Size

123 mm²

Board Design

330W

TDP

65W

700 W

Suggested PSU

250 W

1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C

Outputs

No outputs

2x 8-pin

Power Connectors

1x 6-pin

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

-

CUDA

-

6.5

Shader Model

5.1

Related GPU Comparisons

1

NVIDIA GeForce GT 630 Rev. 2 PCIe x8 vs AMD Radeon RX 6900 XTX

2

NVIDIA GeForce RTX 3060 vs AMD Radeon RX 6900 XTX

3

NVIDIA GeForce 8400 GS Rev. 3 vs AMD Radeon RX 6900 XTX

4

ATI Radeon HD 5850 vs AMD Radeon RX 6900 XTX

5

AMD Radeon RX 7900 XT vs AMD Radeon RX 6900 XTX

6

AMD Radeon HD 7470 OEM vs AMD Radeon RX 6900 XTX

7

NVIDIA GeForce RTX 3080 vs AMD Radeon RX 6900 XTX

8

AMD Radeon RX 6900 XTX vs NVIDIA GeForce 205 OEM

9

AMD Radeon RX 6900 XTX vs AMD Radeon HD 6290

10

AMD Radeon RX 6900 XTX vs ATI Radeon HD 5750

Related News

1

NVIDIA Grace CPU Benchmark Results Released, Stunning Performance

2

Minisforum Launches UM890 Pro Mini PC with R9 8945HS and Dual USB4 Ports

3

Does the Apple A18 Neural Engine Boast Superior Performance? Computational Power May Surpass M4 Chip

4

AMD's Commitment to Pioneering Each Generation with Cutting-Edge Process Technology and Continuous Innovation in Design, Packaging, and Assembly

5

NVIDIA to Ramp Up Orders and Add New Suppliers to Meet Explosive Demand for Blackwell Products

6

NVIDIA Informs Brands of Reduced Supply for RTX 40 Series GPUs

7

Only 3 Weeks Left! AMD Zen5 Launching Soon

8

Ilya Departs OpenAI to Launch New Company Aiming at Superintelligence!

9

Comprehensive Overview of AMD Ryzen 9000 Zen5 Desktop CPUs

10

Intel May Increase Base Frequencies for Arrow Lake-S / H / HX, High-End Chips to Reach 3GHz or Higher