AMD Radeon RX 6900 XT vs ATI Radeon HD 4870 Mac Edition

VS

AMD Radeon RX 6900 XT

ATI Radeon HD 4870 Mac Edition

We compared two Desktop platform GPUs: 16GB VRAM Radeon RX 6900 XT and 512MB VRAM Radeon HD 4870 Mac Edition to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

AMD Radeon RX 6900 XT 's Advantages

Released 11 years and 9 months late

Boost Clock2250MHz

More VRAM (16GB vs 512GB)

Larger VRAM bandwidth (512.0GB/s vs 108.8GB/s)

4320 additional rendering cores

ATI Radeon HD 4870 Mac Edition 's Advantages

Lower TDP (150W vs 300W)

Score

Benchmark

FP32 (float)

Radeon RX 6900 XT +1820%

23.04 TFLOPS

Radeon HD 4870 Mac Edition

1.2 TFLOPS

Radeon RX 6900 XT

VS

Radeon HD 4870 Mac Edition

Graphics Card

Oct 2020

Release Date

Jan 2009

Navi II

Generation

Radeon R700

Desktop

Type

Desktop

PCIe 4.0 x16

Bus Interface

PCIe 2.0 x16

Clock Speeds

1825 MHz

Base Clock

-

2250 MHz

Boost Clock

-

2000 MHz

Memory Clock

850 MHz

Memory

16GB

Memory Size

512MB

GDDR6

Memory Type

GDDR5

256bit

Memory Bus

256bit

512.0GB/s

Bandwidth

108.8GB/s

Render Config

80

Compute Units

10

-

5120

Shading Units

800

320

TMUs

40

128

ROPs

16

-

80

RT Cores

-

128 KB per Array

L1 Cache

16 KB (per CU)

4 MB

L2 Cache

256 KB

128 MB

L3 Cache

-

Theoretical Performance

288.0 GPixel/s

Pixel Rate

12.00 GPixel/s

720.0 GTexel/s

Texture Rate

30.00 GTexel/s

46.08 TFLOPS

FP16 (half)

-

23.04 TFLOPS

FP32 (float)

1200 GFLOPS

1440 GFLOPS

FP64 (double)

240.0 GFLOPS

Board Design

300W

TDP

150W

700 W

Suggested PSU

450 W

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

Outputs

1x DVI 1x mini-DisplayPort 1.0

2x 8-pin

Power Connectors

2x 6-pin

Graphics Processor

Navi 21

GPU Name

RV770

Navi 21 XTX (215-121000167)

GPU Variant

RV770 XT Mac (215-0669080)

RDNA 2.0

Architecture

TeraScale

TSMC

Foundry

TSMC

7 nm

Process Size

55 nm

26.8 billion

Transistors

0.956 billion

520 mm²

Die Size

256 mm²

Graphics Features

12 Ultimate (12_2)

DirectX

10.1 (10_1)

4.6

OpenGL

3.3

2.1

OpenCL

1.1

1.3

Vulkan

N/A

-

6.5

Shader Model

4.1

Related GPU Comparisons

1

AMD Radeon RX 6900 XT vs NVIDIA GeForce GT 730 OEM

2

AMD Radeon RX 6900 XT vs AMD Radeon HD 6870 1600SP Edition

3

AMD Radeon RX 6900 XT vs NVIDIA GeForce GTX 760 Ti OEM Rebrand

4

AMD Radeon RX 6900 XT vs ATI Radeon X1050

5

AMD Radeon RX 6900 XT vs ATI Radeon X1600 PRO AGP

6

AMD Radeon RX 6900 XT vs AMD Radeon Pro 5700

7

AMD Radeon RX 6900 XT vs AMD Radeon R9 280X2

8

AMD Radeon RX 6900 XT vs ATI Radeon HD 3650 AGP

9

AMD Radeon RX 6900 XT vs ATI Radeon HD 3850 X3

10

AMD Radeon RX 6900 XT vs NVIDIA GeForce GTS 450

Related News

1

Double the Excitement! AMD FSR 4.0 to Launch Alongside RX 9070 XT Graphics Card

2

CPU-Z Minor Update: Support for Intel's Four New Products and New Memory

3

CXMT Reportedly Achieves 80% Yield in DDR5 Production

4

Intel Wildcat Lake Appears on Shipping List with FCBGA1516 Socket, Poised to Replace Alder Lake-N

5

The Commencement of ARM and Qualcomm Licensing Dispute Trial: Potential Major Impact on PC Market

6

NVIDIA Allegedly Equips RTX 5080 with 30Gbps Memory Speed, Other Models to Feature 28Gbps

7

Intel Reports High Return Rates for Devices Featuring Snapdragon X Series; Qualcomm Counters with 'Industry Standard' Claim

8

Intel Confirms Panther Lake Adopts 18A Process, ES0 Samples Already Sent to Customers

9

Complete Lineup of Core Ultra 200HX/H/U and Core 200H/U Revealed: 31 Models to Dazzle the Eyes

10

Amechi Unveils V1 Mini PC: Only 0.33L Volume with 150W Power Consumption