Base Clock/ratio--which is better
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CPUs
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Overclocking
Last response: in Overclocking
medoomi
February 22, 2010 6:10:09 PM
After reading through the overclocking guide at the top of the forum, I still haven't figured out what's better:
Is it better to have a higher base clock & lower CPU multiplier, or if a system is stable at 3.5Ghz, can you generally assume different base clock settings/CPU multiplier settings that get the same 3.5Ghz speed would work equally (eg. to get the RAM speed higher)
Is it better to have a higher base clock & lower CPU multiplier, or if a system is stable at 3.5Ghz, can you generally assume different base clock settings/CPU multiplier settings that get the same 3.5Ghz speed would work equally (eg. to get the RAM speed higher)
More about : base clock ratio
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Reply to medoomi
Main thing is the base clock will also effect the Memory, Northbridge chipset, etc. so in order to be stable may need adjustments made to their multipliers also - so it is more a balance of getting the best ratio for overall performance - without hurting any one portion of the equation ! - But if you were able to keep all of the other things running at the same speed there would be no difference - If however the higher base allows you to also get extra speed from the memory and still be stable then the higher base would be preferable and result in a higher performance level - but then if the higher base requires you to lower a multiplier on something else which makes it run slower than the CPU multiplier is best to use - That said it will vary from system to system as to which is better and takes some experimenting to find the best solution.
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Reply to JDFan
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+1 to JDFan
If you increase the base clock and you lower the multipliers of your CPU, RAM, chipset, etc. You won't see any difference if you keep them all at the same speed. There are some people who report being able to use lower voltages when using a higher base clock and lower multipliers.
I've tried running my FSB/HTT from 200 to 347 and the only useful thing I've found out about FSB/HTT overclocking is that you get to finely tune your settings to your liking and aren't bound by multipliers.
If you increase the base clock and you lower the multipliers of your CPU, RAM, chipset, etc. You won't see any difference if you keep them all at the same speed. There are some people who report being able to use lower voltages when using a higher base clock and lower multipliers.
I've tried running my FSB/HTT from 200 to 347 and the only useful thing I've found out about FSB/HTT overclocking is that you get to finely tune your settings to your liking and aren't bound by multipliers.
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Reply to kokin
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medoomi
February 24, 2010 11:32:41 AM
one-shot
February 24, 2010 11:37:58 PM
Keiki646
February 25, 2010 12:27:19 AM
Well What I have done is used a 19x mulitplier. The best you can get with overclocking
here is a video of my overclock how to do
http://www.youtube.com/watch?v=PhAijJyfFlQ
Also this photo as the latest 3D Mark06 score that is 23449
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Intel Core i5 750
Windows 7 (6.1) Ultimate Edition (Build 7600)
CPU Arch : 1 CPU - 4 Cores - 4 Threads
CPU PSN : Intel Core i5 CPU 750 @ 2.67GHz
CPU EXT : MMX, SSE (1, 2, 3, 3S, 4.1, 4.2), EM64T, VT-x
CPUID : 6.E.5 / Extended : 6.1E
CPU Cache : L1 : 4 x 32 / 4 x 32 KB - L2 : 4 x 256 KB
CPU Cache : L3 : 8192 KB
Core : Lynnfield (45 nm) / Stepping : B1
Freq : 4009.2 MHz (211.01 * 19)
MB Brand : Gigabyte
MB Model : P55-USB3
NB : Intel DMI Host Bridge rev 11
SB : Intel P55 rev 06
GPU Type : Radeon HD 5850
GPU Clocks : Core 157 MHz / RAM 300 MHz
DirectX Version : 11.0
RAM : 4096 MB DDR3 Dual Channel
RAM Speed : 633 MHz (2:6) @ 9-9-9-23
Slot 1 : 1024MB (10700)
Slot 1 Manufacturer : Crucial Technology
Slot 2 : 1024MB (10700)
Slot 2 Manufacturer : Crucial Technology
Slot 3 : 1024MB (10700)
Slot 3 Manufacturer : Crucial Technology
Slot 4 : 1024MB (10700)
Slot 4 Manufacturer : Crucial Technology
here is a video of my overclock how to do
http://www.youtube.com/watch?v=PhAijJyfFlQ
Also this photo as the latest 3D Mark06 score that is 23449



Intel Core i5 750
Windows 7 (6.1) Ultimate Edition (Build 7600)
CPU Arch : 1 CPU - 4 Cores - 4 Threads
CPU PSN : Intel Core i5 CPU 750 @ 2.67GHz
CPU EXT : MMX, SSE (1, 2, 3, 3S, 4.1, 4.2), EM64T, VT-x
CPUID : 6.E.5 / Extended : 6.1E
CPU Cache : L1 : 4 x 32 / 4 x 32 KB - L2 : 4 x 256 KB
CPU Cache : L3 : 8192 KB
Core : Lynnfield (45 nm) / Stepping : B1
Freq : 4009.2 MHz (211.01 * 19)
MB Brand : Gigabyte
MB Model : P55-USB3
NB : Intel DMI Host Bridge rev 11
SB : Intel P55 rev 06
GPU Type : Radeon HD 5850
GPU Clocks : Core 157 MHz / RAM 300 MHz
DirectX Version : 11.0
RAM : 4096 MB DDR3 Dual Channel
RAM Speed : 633 MHz (2:6) @ 9-9-9-23
Slot 1 : 1024MB (10700)
Slot 1 Manufacturer : Crucial Technology
Slot 2 : 1024MB (10700)
Slot 2 Manufacturer : Crucial Technology
Slot 3 : 1024MB (10700)
Slot 3 Manufacturer : Crucial Technology
Slot 4 : 1024MB (10700)
Slot 4 Manufacturer : Crucial Technology
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Reply to Keiki646
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Keiki646 said:
Well What I have done is used a 19x mulitplier. The best you can get with overclockinghere is a video of my overclock how to do
Well, that video had nothing to do with OCing.
You may want to get another cooler or lower your vcore, 80's from just running 3Dmark, NOT GOOD.
I did come across your how to video from another one of your posts, you may want to check the Intel data sheet on MAX vtt voltage.
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Reply to RJR
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Lower BCLK means lower Vtt. Remember that the maximum Vtt for LGA1156 CPU is 1.155V.
Set the BCLK/Multiplier combination so that you can achieve a certain OC at a lower Vcore. If you can achieve both combinations at the same Vcore, apply the one with lower BCLK and higher Multiplier as this will definitely give you lower Vtt.
Set the BCLK/Multiplier combination so that you can achieve a certain OC at a lower Vcore. If you can achieve both combinations at the same Vcore, apply the one with lower BCLK and higher Multiplier as this will definitely give you lower Vtt.
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Reply to andy5174
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medoomi said:
Thanks so much for the replies.So, I've seen the CPU multiplier, and the RAM multiplier. Which one is for the chipset (are there others beyond these three I'll need to check?)
Neither. Uncore Multiplier/Ratio is the one for chipset. In addition, it is fixed at 16x and 18x for i5-750 and i7-860 respectively.
BTW, PCH is the chipset voltage.
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Reply to andy5174
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bob5568
February 25, 2010 6:09:30 PM
Keiki646
February 25, 2010 9:19:39 PM
andy5174 said:
Neither. Uncore Multiplier/Ratio is the one for chipset. In addition, it is fixed at 16x and 18x for i5-750 and i7-860 respectively.BTW, PCH is the chipset voltage.
Well I used the 18X this time around and now my SPD is 1333
Switch is perfect for my memory because it's 1333
still at a 4.0Ghz
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Reply to Keiki646
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bob5568
February 26, 2010 1:50:54 PM
The even more confusing thing of Intel is that they have TWO E6300.
Intel has bloody crap naming method.
BTW:
Max voltage: The maximum voltage that will definitely NOT damage your CPU
Absolute max voltage: The maximum voltage that won't burn your CPU 100%. It might damage your CPU now or in the future.
There is an explanation in Intel's datasheet.
Intel has bloody crap naming method.
BTW:
Max voltage: The maximum voltage that will definitely NOT damage your CPU
Absolute max voltage: The maximum voltage that won't burn your CPU 100%. It might damage your CPU now or in the future.
There is an explanation in Intel's datasheet.
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Reply to andy5174
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