Memory Performance Benchmarks on New G4/466 vs. Prev. G4/450

The Source for Performance News, Tips & Reviews

Reviews and Daily News with a Difference!
Select a Topic Area To See a List of Related Reviews & Articles Systems \| CPU Upgrades \| SCSI \| IDE \| Firewire \| Video \| Audio \| Games \| Misc/OS \| Archives \| Search Searchable Databases of Mac Owner Reports on: CPU Upgrades \| Drive Compatibility (HD/DVD/CDRW/Tape) \| System/Graphics Benchmarks \| Game Reviews Got Questions? - Check the FAQ for Answers 800+ Answers on CPU Upgrades/CDR/DVD/Storage/Video Cards/Firewire/Games & More!
Email News/Tips/Reviews \| Forums down \| Advertise here

1/11/01 Thursday's News: Story Detail

Return to News Page

Memory Performance Benchmarks on New G4/466 vs. Prev. G4/450

Last Updated: 1/11/2001, 9:07 PM

A reader sent memory benchmark results of tests with a 100mhz bus G4/450 system vs. a new G4/466 system with 133MHz bus. In most cases the new G4 showed substantially higher performance (up to 140%).

Mike,
I thought you might be interested in these measurements I made of the memory throughput of the new machines. Attached is a comparison - the numbers in the chart are in Mb/s. (The CopyBits scores are attributable to the nVidia card). [Initial driver release] The measurements were taken with a tool I wrote.
Kent"

I would be very curious to see what the results would be with a 7450 CPU (256k on-chip L2 cache and 1MB L3 cache) with a Radeon card.

Kent's test results are in the table below. (I'm assuming the numbers are MB/sec rates).

Test	450/100 (old G4)	466/133 (new G4)	% improvement:
Vector Writes to GDevice	124.9	198.3	59%
Vector Writes Cache Inhibited	487.3	973.6	100%
Vector Writes 431.3	583	35%
GPR Writes to GDevice	50.1	60.2	20%
GPR Writes reversed	541	704.5	30%
GPR Writes (cache)	572.3	706.3	23%
GPR Writes byte reversed uncached	122.8	240.3	96%
GPR Writes Cache Inhibited	244.8	486.5	99%
GPR Writes	353.9	554.8	57%
FPR Writes (cache)	584.7	619.5	6%
FPR Writes Uncached	245.4	487	98%
FPR Writes to GDevice	82.6	198.3	140%
FPR Writes	369.2	577	56%
CopyBits 8	181.6	153.3	-15%
CopyBits 32	172.4	165.7	-4%
CopyBits 16	185.1	168.3	-10%
BlockMoveData 512K	355.3	522.8	47%
BlockMoveData 2Mb	206.1	295.3&	43%
BlockMoveData 256K	498.8	522.5	5%
BlockMoveData 1Mb	206.7	307.4	29%
BlockMoveData 1k	1939.6	2300.9	19%

For more info on the new G4s - see our page with comments, features, photos and pricing.

Return to Main News Page

FasterMac.net
Internet Access

OWC SPECIALS!
See full list!

Mac Help Now!
Freq. Asked Questions
(Check First!)

Mac Model Articles

CPU Upgrade Articles

Video/Card Articles

Storage Articles

Search Mac Drive Upgrades/Compat. Database

Search the CPU Upgrade Database

Search the
Game/System Perf. Database

Read Game Reviews

Make a Difference: Be the Difference Randy Mita, Brad Lau and I came up with a new slogan and theme for Mac advocacy - "Make a Difference: Be the Difference". We're asking that all Mac owners take advantage of every opportunity to let others know the Mac advantage. It's a grass-roots approach that will surely help.

This site is not affiliated with nor supported by XLR8 or Apple Computer.

Thanks to my wife, the ultimate computer widow
for putting up with all the time I spend with the site work, tests and email.

= Top of Page =

Copyright © 1997-2008. All Rights Reserved
No part of this site's original content is to be reproduced in any format without permission.
All brand or product names mentioned here are properties of their respective companies.
Legal: Users of the web site must read and are bound by the terms and conditions of use.

Site Logo Design by Jamie Bakum