AMD Radeon RX 7800 vs AMD Radeon HD 7850

VS

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 7800 and 2GB VRAM Radeon HD 7850 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 7800 's Advantages

Released 10 years and 10 months late

Boost Clock2800MHz

More VRAM (16GB vs 2GB)

Larger VRAM bandwidth (576.0GB/s vs 153.6GB/s)

2816 additional rendering cores

AMD Radeon HD 7850 's Advantages

Lower TDP (130W vs 300W)

Score

Benchmark

FP32 (float)

Radeon RX 7800 +2019%

37.32 TFLOPS

Radeon HD 7850

1.761 TFLOPS

Radeon RX 7800

VS

Radeon HD 7850

Graphics Card

Jan 2023

Release Date

Mar 2012

Navi III

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 3.0 x16

Clock Speeds

1800 MHz

Base Clock

-

2800 MHz

Boost Clock

-

2250 MHz

Memory Clock

1200 MHz

Memory

16GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

256bit

576.0GB/s

Bandwidth

153.6GB/s

Render Config

-

SM Count

-

60

Compute Units

16

3840

Shading Units

1024

240

TMUs

64

128

ROPs

32

-

Tensor Cores

-

60

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

4 MB

L2 Cache

512 KB

Theoretical Performance

358.4 GPixel/s

Pixel Rate

27.52 GPixel/s

672.0 GTexel/s

Texture Rate

55.04 GTexel/s

86.02 TFLOPS

FP16 (half)

-

43.01 TFLOPS

FP32 (float)

1.761 TFLOPS

1344 GFLOPS

FP64 (double)

110.1 GFLOPS

Graphics Processor

Navi 32

GPU Name

Pitcairn

Navi 32 XT

GPU Variant

Pitcairn PRO (215-0828062)

RDNA 3.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

5 nm

Process Size

28 nm

Unknown

Transistors

2.8 billion

346 mm²

Die Size

212 mm²

Board Design

300W

TDP

130W

700 W

Suggested PSU

300 W

1x HDMI 2.1a 3x DisplayPort 2.1

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 (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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