Go Back   AnandTech Forums > Software > Operating Systems

Forums
· Hardware and Technology
· CPUs and Overclocking
· Motherboards
· Video Cards and Graphics
· Memory and Storage
· Power Supplies
· Cases & Cooling
· SFF, Notebooks, Pre-Built/Barebones PCs
· Networking
· Peripherals
· General Hardware
· Highly Technical
· Computer Help
· Home Theater PCs
· Consumer Electronics
· Digital and Video Cameras
· Mobile Devices & Gadgets
· Audio/Video & Home Theater
· Software
· Software for Windows
· All Things Apple
· *nix Software
· Operating Systems
· Programming
· PC Gaming
· Console Gaming
· Distributed Computing
· Security
· Social
· Off Topic
· Politics and News
· Discussion Club
· Love and Relationships
· The Garage
· Health and Fitness
· Home and Garden
· Merchandise and Shopping
· For Sale/Trade
· Hot Deals with Free Stuff/Contests
· Black Friday 2014
· Forum Issues
· Technical Forum Issues
· Personal Forum Issues
· Suggestion Box
· Moderator Resources
· Moderator Discussions
   

Reply
 
Thread Tools
Old 04-12-2012, 08:49 AM   #1
beginner99
Platinum Member
 
Join Date: Jun 2009
Posts: 2,243
Default Win 7 superfecth/prefetch in hybrid system (SSD + HDD)

I've read a ton of stuff about this but no one seems to have a clear answer. It is in general recommended (also by intel ssd toolbox) to turn superfetch and prefetch off if you have an ssd. But I also have applications, especially games, on a normal HDD. So therefore I believe I would benefit from these technologies.

Also some people claim superfetch does nothing even if it is turned on if it determines that the drive is fast enough. With "the drive" I assume the OS drive is meant.

Has anyone here played around with superfetch settings? (eg 0,1,2,3)

I'm also uncertain what the downside of superfetch is? I mean RAM i still much faster than an ssd so why turn it of at all?
beginner99 is offline   Reply With Quote
Old 04-12-2012, 10:14 AM   #2
theevilsharpie
Platinum Member
 
Join Date: Nov 2009
Location: Southern California
Posts: 2,320
Default

Superfetch consumes I/O bandwidth. If you have a situation where minimizing I/O bandwidth usage is important (e.g. large-scale VDI, remote iSCSI volumes, etc.), disabling Superfetch may improve performance. Otherwise, I don't see any reason to disable it.
theevilsharpie is offline   Reply With Quote
Old 04-14-2012, 12:02 AM   #3
LokutusofBorg
Golden Member
 
LokutusofBorg's Avatar
 
Join Date: Mar 2001
Location: Rocky Mtns, USA
Posts: 1,055
Default

The Windows 7 blog has a post about what they did to support SSDs in Windows 7, and in there they mention that Windows itself may disable SuperFetch on an SSD if it's fast enough.

I am of the mind that this is just one of the many completely unneeded SSD "optimizations". Just leave it alone and you'll be fine.
LokutusofBorg is offline   Reply With Quote
Old 04-15-2012, 10:21 PM   #4
postmortemIA
Diamond Member
 
postmortemIA's Avatar
 
Join Date: Jul 2006
Location: Midwest USA
Posts: 6,582
Default

superfetch and disk defragmenter ignore SSDs drives. You may leave it on, it will work on hard drives that you have on system.
__________________
D1. Win7 x64 i7-3770 on Z77, HD7850, 2707WFP, 840, X-Fi D2. Win7 x64 E8400 on P35
L1. OSX 10.9 rMBP 13 L2. Vista x86 E1505
M. Galaxy S4

postmortemIA is online now   Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 08:00 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.