AMD Radeon RX 7900 XT vs AMD Radeon Sky 900

VS

AMD Radeon RX 7900 XT

AMD Radeon Sky 900

We compared two Desktop platform GPUs: 20GB VRAM Radeon RX 7900 XT and 3GB VRAM Radeon Sky 900 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7900 XT 's Advantages

Released 9 years and 8 months late

Boost Clock has increased by 152% (2394MHz vs 950MHz)

More VRAM (20GB vs 3GB)

Larger VRAM bandwidth (800.0GB/s vs 240.0GB/s)

3584 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon RX 7900 XT +1411%

51.48 TFLOPS

Radeon Sky 900

3.405 TFLOPS

Radeon RX 7900 XT

VS

Radeon Sky 900

Graphics Card

Nov 2022

Release Date

Mar 2013

Navi III

Generation

Radeon Sky

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1387 MHz

Base Clock

825 MHz

2394 MHz

Boost Clock

950 MHz

2500 MHz

Memory Clock

1250 MHz

Memory

20GB

Memory Size

3GB

GDDR6

Memory Type

GDDR5

320bit

Memory Bus

384bit

800.0GB/s

Bandwidth

240.0GB/s

Render Config

84

Compute Units

28

-

5376

Shading Units

1792

336

TMUs

112

192

ROPs

32

-

84

RT Cores

-

256 KB per Array

L1 Cache

16 KB (per CU)

6 MB

L2 Cache

768 KB

80 MB

L3 Cache

-

Theoretical Performance

459.6 GPixel/s

Pixel Rate

30.40 GPixel/s

804.4 GTexel/s

Texture Rate

106.4 GTexel/s

103.0 TFLOPS

FP16 (half)

-

51.48 TFLOPS

FP32 (float)

3.405 TFLOPS

1.609 TFLOPS

FP64 (double)

851.2 GFLOPS

Board Design

300W

TDP

300W

700 W

Suggested PSU

700 W

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

Outputs

1x DVI 1x mini-DisplayPort 1.2

2x 8-pin

Power Connectors

2x 8-pin

Graphics Processor

Navi 31

GPU Name

Tahiti

Navi 31 XT (215-145000156)

GPU Variant

Orthrus

RDNA 3.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

5 nm

Process Size

28 nm

57.7 billion

Transistors

4.313 billion

529 mm²

Die Size

352 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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