AccelerateYourMac logo
The Source for Performance News, Tips & Reviews


Click for Wireless Networking Upgrades!



Click for Voyager Hard Drive Docks!
Click for Voyager Hard Drive Docks!

Reviews and Daily News with a  Difference!
Mac Models/Mods  | CPU Upgrades  | Storage  | Video  | Audio/HT  | Apps/OS/Network/Misc  | Archives  | Search
News, Tips, Reviews or Questions to News at Xlr8YourMac.com
1/11/01 Thursday's News: Story DetailReturn 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


Mini Dual HD!


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




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 © 1997-2014. All Rights Reserved
All brand or product names mentioned here are properties of their respective companies.

Legal: Site Privacy and terms/conditions of use. of use.