| ||Thread Tools|
|2nd March 2008, 13:33||#1|
Join Date: May 2002
Overclocked PCIe bus boosts 9600 GT Performance
On "normal" VGA cards, when you increase the PCI-Express bus frequency you increase the theoretical bandwidth available between card and the rest of the system, but do not affect the speed the card is running at. On the GeForce 9600 GT, a 10% increase in PCI-Express frequency will make the card's core clock run 10% faster!
|2nd March 2008, 13:36||#2|
Join Date: May 2002
This can cause problems if you have a factory overclocked sample, since the OC'ed PCIe bus will increase the GPU speed further still, you can have VGA problems, and since you dont know PCIe <> GPU speeds are linked, you'd think that the VGA card is the culprit and you will RMA it.
Geoffrey had two samples showing this behavior, their factory OC was already far beyond reference speed, the extra PCIe boost pushed them over the edge of stability. With no official info about this hidden "boost" we expected the VGA to be broken; but in fact, it was an overclocked PCIe bus which caused the problems...
undocumented features like this should be made public by NVIDIA in my humble opinion to prevent these issues
|2nd March 2008, 22:36||#3|
Why is it being considered a "feature"? IIRC the PCIe bus is limted to about 115Mhz, past that and things stop working just like with PCI. SATA drives and some Gbit chips use the PCIe bus.
For normal cards overclocking the PCIe bus does nothing as far as performance goes.
|3rd March 2008, 12:58||#6|
Join Date: Nov 2004
|Thread||Thread Starter||Forum||Replies||Last Post|
|AMD Bulldozer Microprocessors May Not Bring Dramatic Performance Boosts.||jmke||WebNews||0||5th August 2010 18:12|
|Need for Speed: Shift Patch 2 Boosts ATI Radeon Performance||jmke||WebNews||0||4th December 2009 12:24|
|NVIDIA Geforce GTX 275 Overclocked Performance Scaling||jmke||WebNews||0||4th June 2009 13:35|
|[M] Geforce 9500 GT SLI vs Geforce 9600 GT Performance Comparison||jmke||WebNews||1||10th September 2008 13:11|
|Geforce 9500 GT SLI vs Geforce 9600 GT Performance Comparison||jmke||Articles & Howto's||0||10th September 2008 13:10|
|Club 3D 9600 GT Overclocked Edition 512MB - coming soon||jmke||WebNews||0||4th April 2008 14:18|
|Inno3D GeForce 8800GT Standard vs. Overclocked Performance Comparison||jmke||WebNews||0||7th January 2008 16:45|
|AMD Phenom X4 9600 Performance Preview||jmke||WebNews||0||20th November 2007 14:27|
|Sparkle boosts PCI performance with 7300/8500 GT VGA Cards||jmke||WebNews||3||17th August 2007 16:44|
|GeIL Shrinks DDR2 Latencies, Boosts DDR2 Performance.||jmke||WebNews||0||2nd February 2005 10:47|