QuantumX Posted July 7, 2013 Share Posted July 7, 2013 Hi people Yesterday I ran a 3770K at 5.3GHz (105bclk) and 9600GT at 960/2450/1160 and scored about 18700 in 3DMark06, both under dice. This morning when I set up again and booted the system didn't post. After alot of troubleshooting the verdict seems that the 3770K is dead. So I set up a 4770K system and eventually ended up at 5.5GHz (5.0GHz Uncore) and GPU at 1000/2450/1150, and scoring 18937. CPU score was more than 1000 points higher than with the 3770K but the game tests efficiency was horrible... http://hwbot.org/submission/2399312_quantumx_3dmark06_geforce_9600_gt_18937_marks I also noticed that with the Ivy setup increasing the bclk would limit the GPU overclocking ability thus only the 960MHz core with 3770K. But the game tests would score much better with increased bclk at a similar frequency. These were my first runs with extreme cooling, and I enjoyed it alot, except for killing the 3770K lol! I'm just curious to what may cause the poor GPU performance with the Haswell system. This was also my first encounter with Haswell, so maybe theres a BIOS setting or something I missed, or maybe it has something to do with the Uncore ratio? Your comments or thoughts would be appreciated, Thanx Quote Link to comment Share on other sites More sharing options...
NoMS Posted July 7, 2013 Share Posted July 7, 2013 (edited) This should explain why 3770K with 105bclk has better score on GT's than 4770K @ 100bclk with 9600GT: http://news.softpedia.com/news/Nvidia-039-s-Secret-Overclocking-GeForce-9600GT-Kills-its-9800GT-Brother-80015.shtml Overclocking the PCI-Express bus will lead to an involuntary overclock of the graphics processor, but at the same time, the driver will still report the standard GPU clock. For instance, raising the PCI-Express bus from 100 to 104MHz will make the GPU beat at a faster pace, from the default 650 MHz to 676MHz. Despite the higher frequency, the driver will still "see" the card as operating at 650 MHz. bclk and pci-e clocks are "tied" on 1155, if you oc bclk automatically you will oc pci-e. A tip (less related to topic): Try older Forceware drivers... Edited July 7, 2013 by NoMS Quote Link to comment Share on other sites More sharing options...
QuantumX Posted July 7, 2013 Author Share Posted July 7, 2013 This should explain why 3770K with 105bclk has better score on GT's than 4770K @ 100bclk with 9600GT:http://news.softpedia.com/news/Nvidia-039-s-Secret-Overclocking-GeForce-9600GT-Kills-its-9800GT-Brother-80015.shtml bclk and pci-e clocks are "tied" on 1155, if you oc bclk automatically you will oc pci-e. A tip (less related to topic): Try older Forceware drivers... Well that explains alot lol! Thanx for the info. I knew the pci-e bus was linked for 1155, just never knew about the 9600GT's secret overclock! So in the end on the 1155 system had a "double secret overclock" in the sense that pci-e bandwidth was increased by increasing bclk and the card generated higher clocks because of higher pci-e frequency. It was part of my planning to try the older drivers (169.21) but had so many stability issues and then switching over from 3770K to 4770K made me completely forget about it. Never even got to run 3DMark05 or 03 either Quote Link to comment Share on other sites More sharing options...
NoMS Posted July 7, 2013 Share Posted July 7, 2013 Well that explains alot lol! Thanx for the info. I knew the pci-e bus was linked for 1155, just never knew about the 9600GT's secret overclock! So in the end on the 1155 system had a "double secret overclock" in the sense that pci-e bandwidth was increased by increasing bclk and the card generated higher clocks because of higher pci-e frequency. It was part of my planning to try the older drivers (169.21) but had so many stability issues and then switching over from 3770K to 4770K made me completely forget about it. Never even got to run 3DMark05 or 03 either Try 197.45, it should do better on 3dm03,05,06. Quote Link to comment Share on other sites More sharing options...
Threedhero Posted July 7, 2013 Share Posted July 7, 2013 I just OC'ed this card again last week and had no issues with newer drivers. Had no issues with stability, youre score looks to be on par with mine. http://hwbot.org/submission/2397884_threedhero_3dmark06_geforce_9600_gt_18813_marks/ Also if you were running your 3770k at 1.8vcore like your 4770k on DICE temps i can see why it died. That way too much, safe voltage for DICE is 1.65vcore. I use two probes one on the pot and one on the IHS during 3d06 tests the IHS will hit temps around -52c and when idle they will be -66c. Quote Link to comment Share on other sites More sharing options...
QuantumX Posted July 8, 2013 Author Share Posted July 8, 2013 (edited) I just OC'ed this card again last week and had no issues with newer drivers. Had no issues with stability, youre score looks to be on par with mine. http://hwbot.org/submission/2397884_threedhero_3dmark06_geforce_9600_gt_18813_marks/ Also if you were running your 3770k at 1.8vcore like your 4770k on DICE temps i can see why it died. That way too much, safe voltage for DICE is 1.65vcore. I use two probes one on the pot and one on the IHS during 3d06 tests the IHS will hit temps around -52c and when idle they will be -66c. No man, the voltage on the 4770K run was only 1.600v, check the screenshot again lol... I ran it at 1.648v with the 3770K. I actually just ended my runs with the 3770K on Friday and then Saterday when I booted up CPU was just dead... The probe on the IHS is a good idea though, I'll try that next time . Hopefully my new 3770K will clock better, so I'm just waiting for the RMA process now... Edited July 8, 2013 by QuantumX Quote Link to comment Share on other sites More sharing options...
Threedhero Posted July 8, 2013 Share Posted July 8, 2013 Oh that was my bad I was looking at your SS at work and it looked like 1.8v. Quote Link to comment Share on other sites More sharing options...
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