AMD Radeon RX 7900 XT vs AMD Radeon HD 7790

VS

AMD Radeon RX 7900 XT

AMD Radeon HD 7790

We compared two Desktop platform GPUs: 20GB VRAM Radeon RX 7900 XT and 1024MB VRAM Radeon HD 7790 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 Clock2394MHz

More VRAM (20GB vs 1024GB)

Larger VRAM bandwidth (800.0GB/s vs 96.00GB/s)

4480 additional rendering cores

AMD Radeon HD 7790 's Advantages

Lower TDP (85W vs 300W)

Score

Benchmark

FP32 (float)

Radeon RX 7900 XT +2772%

51.48 TFLOPS

Radeon HD 7790

1.792 TFLOPS

Radeon RX 7900 XT

VS

Radeon HD 7790

Graphics Card

Nov 2022

Release Date

Mar 2013

Navi III

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1387 MHz

Base Clock

-

2394 MHz

Boost Clock

-

2500 MHz

Memory Clock

1500 MHz

Memory

20GB

Memory Size

1024MB

GDDR6

Memory Type

GDDR5

320bit

Memory Bus

128bit

800.0GB/s

Bandwidth

96.00GB/s

Render Config

84

Compute Units

14

-

5376

Shading Units

896

336

TMUs

56

192

ROPs

16

-

84

RT Cores

-

256 KB per Array

L1 Cache

16 KB (per CU)

6 MB

L2 Cache

256 KB

80 MB

L3 Cache

-

Theoretical Performance

459.6 GPixel/s

Pixel Rate

16.00 GPixel/s

804.4 GTexel/s

Texture Rate

56.00 GTexel/s

103.0 TFLOPS

FP16 (half)

-

51.48 TFLOPS

FP32 (float)

1.792 TFLOPS

1.609 TFLOPS

FP64 (double)

112.0 GFLOPS

Board Design

300W

TDP

85W

700 W

Suggested PSU

250 W

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

Outputs

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

2x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Navi 31

GPU Name

Bonaire

Navi 31 XT (215-145000156)

GPU Variant

Bonaire XT (215-0839039)

RDNA 3.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

5 nm

Process Size

28 nm

57.7 billion

Transistors

2.08 billion

529 mm²

Die Size

160 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.2

OpenCL

2.0

1.3

Vulkan

1.2

-

6.7

Shader Model

6.3

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