AMD Radeon RX 6600 XT vs AMD Radeon HD 7850

VS

AMD Radeon RX 6600 XT AMD Radeon HD 7850

We compared two Desktop platform GPUs: 8GB VRAM Radeon RX 6600 XT 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 6600 XT 's Advantages

Released 9 years and 4 months late

Boost Clock2589MHz

More VRAM (8GB vs 2GB)

Larger VRAM bandwidth (256.0GB/s vs 153.6GB/s)

1024 additional rendering cores

AMD Radeon HD 7850 's Advantages

Lower TDP (130W vs 160W)

Score

Benchmark

FP32 (float)

Radeon RX 6600 XT +501%

10.6 TFLOPS

Radeon HD 7850

1.761 TFLOPS

3DMark Time Spy

Radeon RX 6600 XT +630%

9578

Radeon HD 7850

1312

Radeon RX 6600 XT

VS

Radeon HD 7850

Graphics Card

Jul 2021

Release Date

Mar 2012

Navi II

Generation

Southern Islands

Desktop

Type

Desktop

PCIe 4.0 x8

Bus Interface

PCIe 3.0 x16

Clock Speeds

1968 MHz

Base Clock

-

2589 MHz

Boost Clock

-

2000 MHz

Memory Clock

1200 MHz

Memory

8GB

Memory Size

2GB

GDDR6

Memory Type

GDDR5

128bit

Memory Bus

256bit

256.0GB/s

Bandwidth

153.6GB/s

Render Config

-

SM Count

-

32

Compute Units

16

2048

Shading Units

1024

128

TMUs

64

ROPs

32

-

Tensor Cores

-

32

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

2 MB

L2 Cache

512 KB

Theoretical Performance

165.7 GPixel/s

Pixel Rate

27.52 GPixel/s

331.4 GTexel/s

Texture Rate

55.04 GTexel/s

21.21 TFLOPS

FP16 (half)

-

10.60 TFLOPS

FP32 (float)

1.761 TFLOPS

662.8 GFLOPS

FP64 (double)

110.1 GFLOPS

Graphics Processor

Navi 23

GPU Name

Pitcairn

Navi 23 XT (215-130000006)

GPU Variant

Pitcairn PRO (215-0828062)

RDNA 2.0

Architecture

GCN 1.0

TSMC

Foundry

TSMC

7 nm

Process Size

28 nm

11.06 billion

Transistors

2.8 billion

237 mm²

Die Size

212 mm²

Board Design

160W

TDP

130W

450 W

Suggested PSU

300 W

1x HDMI 2.1 3x DisplayPort 1.4a

Outputs

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

1x 8-pin

Power Connectors

1x 6-pin

Graphics Features

12 Ultimate (12_2)

DirectX

12 (11_1)

4.6

OpenGL

4.6

2.1

OpenCL

1.2

1.3

Vulkan

1.2

-

CUDA

-

6.7

Shader Model

5.1

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