AMD Radeon RX 7700 XT vs AMD Radeon HD 8990 OEM

VS

AMD Radeon RX 7700 XT AMD Radeon HD 8990 OEM

We compared two Desktop platform GPUs: 12GB VRAM Radeon RX 7700 XT and 3GB VRAM Radeon HD 8990 OEM 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 RX 7700 XT +758%

35.17 TFLOPS

Radeon HD 8990 OEM

4.096 TFLOPS

Radeon RX 7700 XT

VS

Radeon HD 8990 OEM

Graphics Card

Aug 2023

Release Date

Apr 2013

Navi III

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1435 MHz

Base Clock

950 MHz

2544 MHz

Boost Clock

1000 MHz

2250 MHz

Memory Clock

1500 MHz

Memory

12GB

Memory Size

3GB

GDDR6

Memory Type

GDDR5

192bit

Memory Bus

384bit

432.0GB/s

Bandwidth

288.0GB/s

Render Config

-

SM Count

-

54

Compute Units

32

3456

Shading Units

2048

216

TMUs

128

96

ROPs

32

-

Tensor Cores

-

54

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

768 KB

Theoretical Performance

244.2 GPixel/s

Pixel Rate

32.00 GPixel/s

549.5 GTexel/s

Texture Rate

128.0 GTexel/s

70.34 TFLOPS

FP16 (half)

-

35.17 TFLOPS

FP32 (float)

4.096 TFLOPS

1099 GFLOPS

FP64 (double)

1024 GFLOPS

Graphics Processor

Navi 32

GPU Name

Malta

Navi 32 XL (215-180000076)

GPU Variant

Malta XT (215-0849026)

RDNA 3.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

5 nm

Process Size

28 nm

28.1 billion

Transistors

4.313 billion

346 mm²

Die Size

365 mm²

Board Design

245W

TDP

375W

550 W

Suggested PSU

750 W

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

Outputs

1x DVI 4x mini-DisplayPort 1.2

2x 8-pin

Power Connectors

2x 8-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.2

OpenCL

1.2

1.3

Vulkan

1.2

-

CUDA

-

6.7

Shader Model

5.1

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