Studiostriver wrote on 2024-12-05, 23:47:
I want to try to overclock it , and i asking how much would be safe zone so to speak? 1.5/6? Or i can dare to try 1.7 for example?
The safe voltage for a Tualatin CPU is 1.75 volts according to Intel: https://theretroweb.com/misc/documentation/24 … de769755306.pdf
The truth is, overclocking is NOT about voltage. It's more about thermals, but that is also NOT the most important thing. What really matters here is the quality of the silicon wafer used in your CPU. So if you wanna get REALLY GOOD OC results, you don't need high voltage. What you need is a perfect batch. To get one you have to start binning. 😀 There is no other way... What you should look for is the latest revision of a given CPU. The later the production date, the higher the chances of finding what you need 😉 How many CPUs do you need to find a perfect one? At least 10.... From my experience: 1 out of 10 CPUs is very good, 2 are good, and the rest is trash. Just look for different production dates, don't take the ones made at the same time.
So now you probably wonder: How high can you can I go?
With a regular socket 370 cooling and poor quality thermal-paste your CPU will probably run over 50 Celsius at the default Vcore. You need to lower the temps as much as you can. Using a high quality paste and a copper-based cooler (from socket A boards) can make a real difference, and you will be able to go down to 34-38 Celcius.
Now you can expect:
- at 1,45Vcore : up to 1800 MHz ( with max temperatures under full load being 39 Celsius) but usually that is around 1750 MHz
- at 1,65Vcore : up to 1900 MHz ( with max temperatures under full load being 44 Celsius) but usually that is around 1850 MHz
- at 1,75Vcore: up to 2000 MHz ( with max temperatures under full load being 44 Celsius) but usually that is around 1950 MHz (here you need to delid and use liquid metal)
Of course if have only one sample of a given CPU it won't overclock that good (unless you are very lucky). For example most SL6BY CPUS overclock easily above 160 MHz but only 1 in 5 will reach 166 MHz. at 1,65v...) So if your CPU just doesn't want to overclock don't feed him with too much 😉 It doesn't make any sense to use higher voltage unless you are planning some extreme cooling solutions like dry ice or liquid nitrogen. I have tried that kind of cooling only ONCE and it wasn't worth it. https://www.youtube.com/watch?v=pR2FxPIo3es
Naturally, to be able to achieve such high speeds, you also have to have a decent mobo 😉 Only the ones base on i815 will give you the chance to reach FSB higher than 200 MHz, forget about Intel BX440. VIA chipsets will be good to around 170 MHz maximum in sometimes up to 180 MHz. Memory is not a problem at all here. Boards like ABIT ST6 or ASUS TUSL2-C give you the chance to overclock in asynchronous mode, so basically any SDR133 CL2 will be fine for overclocking up to 200 MHz. BUT if you want to have tight timings, then you also have to know what to look for 😉 You have to bear in mind that overclocking on a regular board will affect all other components on your mobo especially when you go higher than 166 MHz (unless you are using a mobo with 1/5 PCI divider, but there aren't many of those...). Do not use Radeon 9X00 cards, especially 9700PRO and 9800 PRO - they don't like AGP frequencies higher than 78 MHz. Stick to some GeForce 4 MX 440m MX4000, 6200 cards (they are cheap and tolerant of around 115 MHz AGP frequncies)
In case:
You need a CPU that overclocks beyond 220 MHz - HIT ME!
You need an SDR memory that is able to go 200 MHZ CL 2-2-2-7 - HIT ME!
You want to find a way how to easily select a fast CPU - HIT ME!
BTW! Don't listen to skeptics, be careful what you are doing, monitor the temps and voltages; and always have fun!!! 😀
