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can anyone help me understand GTL voltages on my 750i?

post #1 of 4
Thread Starter 
like the title says... I don't have a clue about GTL voltages, and i need some info(so i don't mess it up )
The Stargate
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Q6600 G0 @3.0ghz 1.325v EVGA 750i FTW EVGA GeForce 8800GT 4gb gskill 1000mhz 5-5-5-15 
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The Stargate
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CPUMotherboardGraphicsRAM
Q6600 G0 @3.0ghz 1.325v EVGA 750i FTW EVGA GeForce 8800GT 4gb gskill 1000mhz 5-5-5-15 
Hard DriveOptical DriveOSMonitor
400gb WD 20x LG dvdrw Vista64/Linux64 hp pavilion f1703 
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ultra X3 1000w Apevia X-plorer 
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post #2 of 4
Here is another OCN Article:

http://www.overclock.net/intel-mothe...reference.html
post #3 of 4
Tom's Hardware :

CPU/NB GTL Voltage Reference: CPU: Auto, 0.63x, 0.61x, 0.59x, and 0.57x. NB: Auto, 0.67x, and 0.61x. CPU Gunning Transceiver Logic (GTL) voltages are nothing more than reference levels that the CPU uses when determining if a data or address signal is either high (1) or low (0). Precision voltage dividers generate these voltages and are usually specified as a percentage of VTT. In the case of 0.67, this would be 67% of VTT. For example, if VTT is 1.20v then a CPU GTL Voltage Reference of 0.67x would result in a GTLREF value of 0.67 x 1.20V = ~0.80V.

So... by choosing a higher preset setting (0.63x, 0.61x, 0.59x, or 0.57x) it should help achieving higher FSB? (asumming CPU isn't the problem there)

I read on to notice this is mostly a nice setting for quads and the nvidia chipsets...

I found this post while reading:

GTL + VTT are the key to higher FSBs with Kentsfield, no doubt about it.
With the default GTL Values of 48/48/128, this was maximum:


Now, with GTL increased to 166/166/166, I managed to get the FSB up to 400 from the previous 334. Even the P5B Deluxe, known as one of the best (if not the best) Kentsfield overclocking board, didn't get me more than 375 out of this Kenny:



this is just a first impression of what GTL voltage is able to do to your Kentsfield

That was all from Toms Hardware... none of those screenies are my PC.
Edited by Arakasi - 6/23/08 at 9:22pm
post #4 of 4
Thread Starter 
yeah, those help.... but they don't help with the Vtt that my bios doesn't show me, or allow me to adjust....!!!!
The Stargate
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 G0 @3.0ghz 1.325v EVGA 750i FTW EVGA GeForce 8800GT 4gb gskill 1000mhz 5-5-5-15 
Hard DriveOptical DriveOSMonitor
400gb WD 20x LG dvdrw Vista64/Linux64 hp pavilion f1703 
PowerCase
ultra X3 1000w Apevia X-plorer 
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The Stargate
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 G0 @3.0ghz 1.325v EVGA 750i FTW EVGA GeForce 8800GT 4gb gskill 1000mhz 5-5-5-15 
Hard DriveOptical DriveOSMonitor
400gb WD 20x LG dvdrw Vista64/Linux64 hp pavilion f1703 
PowerCase
ultra X3 1000w Apevia X-plorer 
  hide details  
Reply
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