AMD Radeon HD 6790 vs AMD Radeon RX 6900 XTX

VS

AMD Radeon HD 6790 AMD Radeon RX 6900 XTX

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 6790 and 16GB VRAM Radeon RX 6900 XTX to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 6790 's Advantages

Lower TDP (150W vs 330W)

AMD Radeon RX 6900 XTX 's Advantages

Boost Clock2435MHz

More VRAM (16GB vs 1GB)

Larger VRAM bandwidth (576.0GB/s vs 134.4GB/s)

4320 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 6790

1.344 TFLOPS

Radeon RX 6900 XTX +1754%

24.93 TFLOPS

Radeon HD 6790

VS

Radeon RX 6900 XTX

Graphics Card

Apr 2011

Release Date

Unknown

Northern Islands

Generation

Navi II

Desktop

Type

Desktop

PCIe 2.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

2075 MHz

-

Boost Clock

2435 MHz

1050 MHz

Memory Clock

2250 MHz

Memory

1024MB

Memory Size

16GB

GDDR5

Memory Type

GDDR6

256bit

Memory Bus

256bit

134.4GB/s

Bandwidth

576.0GB/s

Render Config

-

SM Count

-

10

Compute Units

80

800

Shading Units

5120

40

TMUs

320

16

ROPs

128

-

Tensor Cores

-

RT Cores

80

8 KB (per CU)

L1 Cache

128 KB per Array

512 KB

L2 Cache

4 MB

Theoretical Performance

13.44 GPixel/s

Pixel Rate

311.7 GPixel/s

33.60 GTexel/s

Texture Rate

779.2 GTexel/s

-

FP16 (half)

49.87 TFLOPS

1344 GFLOPS

FP32 (float)

24.93 TFLOPS

-

FP64 (double)

1.558 TFLOPS

Graphics Processor

Barts

GPU Name

Navi 21

Barts LE (215-0798002)

GPU Variant

Navi 21 XTXH (215-121000247)

TeraScale 2

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

40 nm

Process Size

7 nm

1.7 billion

Transistors

26.8 billion

255 mm²

Die Size

520 mm²

Board Design

150W

TDP

330W

450 W

Suggested PSU

700 W

2x DVI 1x HDMI 1.3a 1x DisplayPort 1.1

Outputs

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

2x 6-pin

Power Connectors

2x 8-pin

Graphics Features

11.2 (11_0)

DirectX

12 Ultimate (12_2)

4.4

OpenGL

4.6

1.2

OpenCL

2.1

N/A

Vulkan

1.3

-

CUDA

-

5.0

Shader Model

6.5

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