AMD Radeon RX 7900 GRE vs ATI Radeon HD 2900 XT

VS

AMD Radeon RX 7900 GRE

ATI Radeon HD 2900 XT

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 7900 GRE and 512MB VRAM Radeon HD 2900 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7900 GRE 's Advantages

Released 16 years and 2 months late

Boost Clock2245MHz

More VRAM (16GB vs 512GB)

Larger VRAM bandwidth (576.0GB/s vs 106.0GB/s)

4800 additional rendering cores

ATI Radeon HD 2900 XT 's Advantages

Lower TDP (215W vs 260W)

Score

Benchmark

FP32 (float)

Radeon RX 7900 GRE +9559%

45.98 TFLOPS

Radeon HD 2900 XT

0.476 TFLOPS

Radeon RX 7900 GRE

VS

Radeon HD 2900 XT

Graphics Card

Jul 2023

Release Date

May 2007

Navi III

Generation

Radeon R600

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 1.0 x16

Clock Speeds

1287 MHz

Base Clock

-

2245 MHz

Boost Clock

-

2250 MHz

Memory Clock

828 MHz

Memory

16GB

Memory Size

512MB

GDDR6

Memory Type

GDDR3

256bit

Memory Bus

512bit

576.0GB/s

Bandwidth

106.0GB/s

Render Config

80

Compute Units

4

-

5120

Shading Units

320

TMUs

16

160

ROPs

16

-

80

RT Cores

-

256 KB per Array

L1 Cache

-

6 MB

L2 Cache

256 KB

64 MB

L3 Cache

-

Theoretical Performance

359.2 GPixel/s

Pixel Rate

11.89 GPixel/s

718.4 GTexel/s

Texture Rate

11.89 GTexel/s

91.96 TFLOPS

FP16 (half)

-

45.98 TFLOPS

FP32 (float)

475.5 GFLOPS

1437 GFLOPS

FP64 (double)

-

Board Design

260W

TDP

215W

600 W

Suggested PSU

550 W

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

Outputs

2x DVI 1x S-Video

2x 8-pin

Power Connectors

1x 6-pin + 1x 8-pin

Graphics Processor

Navi 31

GPU Name

R600

Navi 31 XL (215-145000206)

GPU Variant

R600 XT (215RGMDKA13FG)

RDNA 3.0

Architecture

TeraScale

TSMC

Foundry

TSMC

5 nm

Process Size

80 nm

57.7 billion

Transistors

0.72 billion

529 mm²

Die Size

420 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

10.0 (10_0)

4.6

OpenGL

3.3 (full) 4.0 (partial)

2.2

OpenCL

N/A

1.3

Vulkan

N/A

-

6.7

Shader Model

4.0

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