AMD Radeon HD 8990 OEM vs AMD Radeon RX 7900 GRE

VS

AMD Radeon HD 8990 OEM

AMD Radeon RX 7900 GRE

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 8990 OEM and 16GB VRAM Radeon RX 7900 GRE 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 10 years and 3 months late

Boost Clock has increased by 124% (2245MHz vs 1000MHz)

More VRAM (16GB vs 3GB)

Larger VRAM bandwidth (576.0GB/s vs 288.0GB/s)

3072 additional rendering cores

Lower TDP (260W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 8990 OEM

4.096 TFLOPS

Radeon RX 7900 GRE +1022%

45.98 TFLOPS

Radeon HD 8990 OEM

VS

Radeon RX 7900 GRE

Graphics Card

Apr 2013

Release Date

Jul 2023

Sea Islands

Generation

Navi III

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

950 MHz

Base Clock

1287 MHz

1000 MHz

Boost Clock

2245 MHz

1500 MHz

Memory Clock

2250 MHz

Memory

3GB

Memory Size

16GB

GDDR5

Memory Type

GDDR6

384bit

Memory Bus

256bit

288.0GB/s

Bandwidth

576.0GB/s

Render Config

32

Compute Units

80

-

2048

Shading Units

5120

128

TMUs

320

32

ROPs

160

-

RT Cores

80

16 KB (per CU)

L1 Cache

256 KB per Array

768 KB

L2 Cache

6 MB

-

L3 Cache

64 MB

Theoretical Performance

32.00 GPixel/s

Pixel Rate

359.2 GPixel/s

128.0 GTexel/s

Texture Rate

718.4 GTexel/s

-

FP16 (half)

91.96 TFLOPS

4.096 TFLOPS

FP32 (float)

45.98 TFLOPS

1024 GFLOPS

FP64 (double)

1437 GFLOPS

Board Design

375W

TDP

260W

750 W

Suggested PSU

600 W

1x DVI 4x mini-DisplayPort 1.2

Outputs

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

2x 8-pin

Power Connectors

2x 8-pin

Graphics Processor

Malta

GPU Name

Navi 31

Malta XT (215-0849026)

GPU Variant

Navi 31 XL (215-145000206)

GCN 1.0

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

5 nm

4.313 billion

Transistors

57.7 billion

365 mm²

Die Size

529 mm²

Graphics Features

12 (11_1)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

1.2

OpenCL

2.2

1.2

Vulkan

1.3

-

5.1

Shader Model

6.7

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