AMD Radeon RX 7900 GRE vs AMD Radeon HD 8770 OEM

VS

AMD Radeon RX 7900 GRE AMD Radeon HD 8770 OEM

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 7900 GRE 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 7900 GRE 's Advantages

Released 9 years and 10 months late

Boost Clock2245MHz

More VRAM (16GB vs 1GB)

Larger VRAM bandwidth (576.0GB/s vs 96.00GB/s)

4224 additional rendering cores

AMD Radeon HD 8770 OEM 's Advantages

Lower TDP (85W vs 260W)

Score

Benchmark

FP32 (float)

Radeon RX 7900 GRE +2343%

45.98 TFLOPS

Radeon HD 8770 OEM

1.882 TFLOPS

Radeon RX 7900 GRE

VS

Radeon HD 8770 OEM

Graphics Card

Jul 2023

Release Date

Sep 2013

Navi III

Generation

Sea Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1287 MHz

Base Clock

-

2245 MHz

Boost Clock

-

2250 MHz

Memory Clock

1500 MHz

Memory

16GB

Memory Size

1024MB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

128bit

576.0GB/s

Bandwidth

96.00GB/s

Render Config

-

SM Count

-

80

Compute Units

14

5120

Shading Units

896

320

TMUs

56

160

ROPs

16

-

Tensor Cores

-

80

RT Cores

-

256 KB per Array

L1 Cache

16 KB (per CU)

6 MB

L2 Cache

256 KB

Theoretical Performance

359.2 GPixel/s

Pixel Rate

16.80 GPixel/s

718.4 GTexel/s

Texture Rate

58.80 GTexel/s

91.96 TFLOPS

FP16 (half)

-

45.98 TFLOPS

FP32 (float)

1.882 TFLOPS

1437 GFLOPS

FP64 (double)

117.6 GFLOPS

Graphics Processor

Navi 31

GPU Name

Bonaire

Navi 31 XL

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

Board Design

260W

TDP

85W

600 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

2x 8-pin

Power Connectors

1x 6-pin

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

-

CUDA

-

6.7

Shader Model

6.3

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