AMD Radeon HD 8770 OEM vs AMD Radeon RX 6900 XT

VS

AMD Radeon HD 8770 OEM

AMD Radeon RX 6900 XT

We compared two Desktop platform GPUs: 1024MB VRAM Radeon HD 8770 OEM and 16GB VRAM Radeon RX 6900 XT to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon HD 8770 OEM 's Advantages

Lower TDP (85W vs 300W)

AMD Radeon RX 6900 XT 's Advantages

Released 7 years and 1 months late

Boost Clock2250MHz

More VRAM (16GB vs 1024GB)

Larger VRAM bandwidth (512.0GB/s vs 96.00GB/s)

4224 additional rendering cores

Score

Benchmark

FP32 (float)

Radeon HD 8770 OEM

1.882 TFLOPS

Radeon RX 6900 XT +1124%

23.04 TFLOPS

Radeon HD 8770 OEM

VS

Radeon RX 6900 XT

Graphics Card

Sep 2013

Release Date

Oct 2020

Sea Islands

Generation

Navi II

Desktop

Type

Desktop

PCIe 3.0 x16

Bus Interface

PCIe 4.0 x16

Clock Speeds

-

Base Clock

1825 MHz

-

Boost Clock

2250 MHz

1500 MHz

Memory Clock

2000 MHz

Memory

1024MB

Memory Size

16GB

GDDR5

Memory Type

GDDR6

128bit

Memory Bus

256bit

96.00GB/s

Bandwidth

512.0GB/s

Render Config

14

Compute Units

80

-

896

Shading Units

5120

56

TMUs

320

16

ROPs

128

-

RT Cores

80

16 KB (per CU)

L1 Cache

128 KB per Array

256 KB

L2 Cache

4 MB

-

L3 Cache

128 MB

Theoretical Performance

16.80 GPixel/s

Pixel Rate

288.0 GPixel/s

58.80 GTexel/s

Texture Rate

720.0 GTexel/s

-

FP16 (half)

46.08 TFLOPS

1.882 TFLOPS

FP32 (float)

23.04 TFLOPS

117.6 GFLOPS

FP64 (double)

1440 GFLOPS

Board Design

85W

TDP

300W

250 W

Suggested PSU

700 W

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

Outputs

1x HDMI 2.1 2x DisplayPort 1.4a 1x USB Type-C

1x 6-pin

Power Connectors

2x 8-pin

Graphics Processor

Bonaire

GPU Name

Navi 21

Bonaire XT (215-0839039)

GPU Variant

Navi 21 XTX (215-121000167)

GCN 2.0

Architecture

RDNA 2.0

TSMC

Foundry

TSMC

28 nm

Process Size

7 nm

2.08 billion

Transistors

26.8 billion

160 mm²

Die Size

520 mm²

Graphics Features

12 (12_0)

DirectX

12 Ultimate (12_2)

4.6

OpenGL

4.6

2.0

OpenCL

2.1

1.2

Vulkan

1.3

-

6.3

Shader Model

6.5

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