AMD Radeon HD 8990 OEM vs AMD Radeon RX 7700 XT

VS

AMD Radeon HD 8990 OEM

AMD Radeon RX 7700 XT

We compared two Desktop platform GPUs: 3GB VRAM Radeon HD 8990 OEM and 12GB VRAM Radeon RX 7700 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7700 XT 's Advantages

Released 10 years and 4 months late

Boost Clock has increased by 154% (2544MHz vs 1000MHz)

More VRAM (12GB vs 3GB)

Larger VRAM bandwidth (432.0GB/s vs 288.0GB/s)

1408 additional rendering cores

Lower TDP (245W vs 375W)

Score

Benchmark

FP32 (float)

Radeon HD 8990 OEM

4.096 TFLOPS

Radeon RX 7700 XT +758%

35.17 TFLOPS

Radeon HD 8990 OEM

VS

Radeon RX 7700 XT

Graphics Card

Apr 2013

Release Date

Aug 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

1435 MHz

1000 MHz

Boost Clock

2544 MHz

1500 MHz

Memory Clock

2250 MHz

Memory

3GB

Memory Size

12GB

GDDR5

Memory Type

GDDR6

384bit

Memory Bus

192bit

288.0GB/s

Bandwidth

432.0GB/s

Render Config

32

Compute Units

54

-

2048

Shading Units

3456

128

TMUs

216

32

ROPs

96

-

RT Cores

54

16 KB (per CU)

L1 Cache

128 KB per Array

768 KB

L2 Cache

2 MB

-

L3 Cache

48 MB

Theoretical Performance

32.00 GPixel/s

Pixel Rate

244.2 GPixel/s

128.0 GTexel/s

Texture Rate

549.5 GTexel/s

-

FP16 (half)

70.34 TFLOPS

4.096 TFLOPS

FP32 (float)

35.17 TFLOPS

1024 GFLOPS

FP64 (double)

1099 GFLOPS

Board Design

375W

TDP

245W

750 W

Suggested PSU

550 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 32

Malta XT (215-0849026)

GPU Variant

Navi 32 XL (215-180000076)

GCN 1.0

Architecture

RDNA 3.0

TSMC

Foundry

TSMC

28 nm

Process Size

5 nm

4.313 billion

Transistors

28.1 billion

365 mm²

Die Size

346 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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