AMD Radeon RX 7990 XTX vs AMD Radeon HD 8770 OEM

VS

AMD Radeon RX 7990 XTX

AMD Radeon HD 8770 OEM

We compared two Desktop platform GPUs: 24GB VRAM Radeon RX 7990 XTX and 1024MB VRAM Radeon HD 8770 OEM to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7990 XTX 's Advantages

Boost Clock3599MHz

More VRAM (24GB vs 1024GB)

Larger VRAM bandwidth (1152GB/s vs 96.00GB/s)

5248 additional rendering cores

AMD Radeon HD 8770 OEM 's Advantages

Lower TDP (85W vs 405W)

Score

Benchmark

FP32 (float)

Radeon RX 7990 XTX +4599%

88.45 TFLOPS

Radeon HD 8770 OEM

1.882 TFLOPS

Radeon RX 7990 XTX

VS

Radeon HD 8770 OEM

Graphics Card

Unknown

Release Date

Sep 2013

Navi III

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

2500 MHz

Base Clock

-

3599 MHz

Boost Clock

-

3000 MHz

Memory Clock

1500 MHz

Memory

24GB

Memory Size

1024MB

GDDR6

Memory Type

GDDR5

384bit

Memory Bus

128bit

1152GB/s

Bandwidth

96.00GB/s

Render Config

96

Compute Units

14

-

6144

Shading Units

896

384

TMUs

56

192

ROPs

16

-

96

RT Cores

-

256 KB per Array

L1 Cache

16 KB (per CU)

6 MB

L2 Cache

256 KB

192 MB

L3 Cache

-

Theoretical Performance

691.0 GPixel/s

Pixel Rate

16.80 GPixel/s

1382 GTexel/s

Texture Rate

58.80 GTexel/s

176.9 TFLOPS

FP16 (half)

-

88.45 TFLOPS

FP32 (float)

1.882 TFLOPS

2.764 TFLOPS

FP64 (double)

117.6 GFLOPS

Board Design

405W

TDP

85W

800 W

Suggested PSU

250 W

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

Outputs

1x DVI 1x HDMI 1.4a 2x mini-DisplayPort 1.2

3x 8-pin

Power Connectors

1x 6-pin

Graphics Processor

Navi 31

GPU Name

Bonaire

Navi 31 XTX+

GPU Variant

Bonaire XT (215-0839039)

RDNA 3.0

Architecture

GCN 2.0

TSMC

Foundry

TSMC

5 nm

Process Size

28 nm

57.7 billion

Transistors

2.08 billion

529 mm²

Die Size

160 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

12 (12_0)

4.6

OpenGL

4.6

2.2

OpenCL

2.0

1.3

Vulkan

1.2

-

6.7

Shader Model

6.3

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