Register FAQ / Rules Forum Spy Search Today's Posts Mark Forums Read
Go Back   MacRumors Forums > Apple Hardware > Desktops > iMac

Reply
 
Thread Tools Search this Thread Display Modes
Old Dec 29, 2012, 02:20 PM   #1
MaydayMAc
macrumors newbie
 
Join Date: Dec 2012
GTX 675MX Good Overclocker

I very pleased with the GTX 675mx it overclocked to 919Mhz on Core and 1325 Mhz on memory stock is 719/1250

and it actually makes big difference in

ive tested lost planet 2 in dx 11 getting 65 FPS in benchmark at 2560x1440 everything max

Borderlands 2 getting 56fps

temps got to 85c max suprised how quiet the cooling is
Attached Thumbnails
Click image for larger version

Name:	gtx675mx.JPG
Views:	842
Size:	143.7 KB
ID:	386611  
MaydayMAc is offline   0 Reply With Quote
Old Dec 29, 2012, 06:06 PM   #2
kaellar
macrumors 6502
 
Join Date: Nov 2012
Wow, pretty nice OC! And I'm really surprised with the stock clocks being way higher than what nvidia claims for 675mx.
kaellar is offline   0 Reply With Quote
Old Dec 29, 2012, 06:25 PM   #3
MaydayMAc
Thread Starter
macrumors newbie
 
Join Date: Dec 2012
At my oc clocks everygame Ive tried works /plays fine
MaydayMAc is offline   0 Reply With Quote
Old Dec 31, 2012, 09:55 AM   #4
MaydayMAc
Thread Starter
macrumors newbie
 
Join Date: Dec 2012
Update I am now running at 1018/1500 . I did use SMC Fancontrol to max the fans to be safe max temp is 70C
Attached Thumbnails
Click image for larger version

Name:	gtx2.JPG
Views:	300
Size:	142.0 KB
ID:	386944  
MaydayMAc is offline   0 Reply With Quote
Old Dec 31, 2012, 10:49 AM   #5
Arman
macrumors regular
 
Join Date: Aug 2008
Location: SoCal
Quote:
Originally Posted by MaydayMAc View Post
Update I am now running at 1018/1500 . I did use SMC Fancontrol to max the fans to be safe max temp is 70C
By any chance, do you mind running some benchmarks (Heaven).
__________________
Late 2012 27" iMac 3.4Ghz, 32GB, 1TB fusion, 675MX
Late 2011 15" MacBook Pro, 2.2Ghz, 16GB, 250GB SSD
iPhone 5 Black 32GB; iPad 4 Black 32GB
Arman is offline   0 Reply With Quote
Old Dec 31, 2012, 10:55 AM   #6
MaydayMAc
Thread Starter
macrumors newbie
 
Join Date: Dec 2012
Just Ran Heaven.

Stock 39fps and score 983

O/C 52fps and score 1317

thats at at 2560*1440 with Tessellation at Normal
MaydayMAc is offline   0 Reply With Quote
Old Dec 31, 2012, 11:00 AM   #7
Mac32
macrumors 6502a
 
Join Date: Nov 2010
Is there a possibility of damaging the screen over time by overclocking the graphics card (heat damage)? (Not to scare people from overclocking their iMacs, just wondering.. )
Mac32 is offline   0 Reply With Quote
Old Dec 31, 2012, 11:17 AM   #8
MaydayMAc
Thread Starter
macrumors newbie
 
Join Date: Dec 2012
No.. I have the Fans running 100%
MaydayMAc is offline   0 Reply With Quote
Old Dec 31, 2012, 11:19 AM   #9
Arman
macrumors regular
 
Join Date: Aug 2008
Location: SoCal
Quote:
Originally Posted by MaydayMAc View Post
Just Ran Heaven.

Stock 39fps and score 983

O/C 52fps and score 1317

thats at at 2560*1440 with Tessellation at Normal
Impressive! I don't feel so bad about not getting the 680MX. Comparing Heaven scores, it would seem you would only need to do a little bit of a OC speed bump to match the 680MX performance and likely still run with the fan at stock speed or only a fraction higher.
__________________
Late 2012 27" iMac 3.4Ghz, 32GB, 1TB fusion, 675MX
Late 2011 15" MacBook Pro, 2.2Ghz, 16GB, 250GB SSD
iPhone 5 Black 32GB; iPad 4 Black 32GB
Arman is offline   0 Reply With Quote
Old Dec 31, 2012, 12:54 PM   #10
MaydayMAc
Thread Starter
macrumors newbie
 
Join Date: Dec 2012
all the games I play run great at this speed.
MaydayMAc is offline   0 Reply With Quote

Reply
MacRumors Forums > Apple Hardware > Desktops > iMac

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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 08:15 PM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps

Mobile Version | Fixed | Fluid | Fluid HD
Copyright 2002-2013, MacRumors.com, LLC