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Discussion Starter #1
Hi, The clock speed of my 940 is often refered to as 3.2 GHz but i sometimes see it shown in some programs as 2.4GHz. In windows system in control panel it gives both the values just mentioned. <br />
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Can anyone explain whats goin on here as i am quite new with the intel stuff.<br />
thank you
 

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The correct clock speed is 3.2 GHz for sure.<br />
<br />
JUts out of curiosty, what is a geforce 7500?
 

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Discussion Starter #3
Ive only heard of it today when i purchased the computer, it has a stock clocks of 550MHz GPU and 800MHz Memory 512MB so its not a bad mid range card and its running games like fear, prey and ghost recon with high texture and model detail settings really well. Ive tried to researh it a little on the net but found just one article talking about its impending release.<br />
It isnt even mentioned on the nVidia website, they go from 7300 to 7600!<br />
weird but its performing ok anyway and ive already got 50Mhz and 100Mhz more out of it!
 

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Maybe your speedstep or something is enabled. On my laptop I have a P3 1Ghz but some programs including control panel say its 700mhz. Check your clocks with CPU-Z if you want an accurate reading.
 

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My chip does that as well. Seems related to enhanced C1 as well as speedstep. I had to disable the c1 to stop it from doing it. The chip drops down to the lowest multi being 12, 200 x 12 = 2400, to run cooler and use less power. You can also use the 12 multi for overclocking by setting your speedstep to minimum and increase your fsb from there. You may be able to acheive a higher FSB than before using the 16 x multi.
 

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make sure EIST is disabled in your BIOS, it lowers the clock during idle cycles and to reduce temps
 

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I wouldn't recommend turning EIST or C1E off. If the system works great that way, so be it, it's a power saving feature and having a Pentium D which consumes so much electricity, it'd be a good idea to leave it running with less power when not needed.<br><br>
My Pentium D 945 overclocked to 4.51ghz runs at 3.18ghz and sure, when the full 4.51ghz is needed, it kicks into gear, so why do you guys recommend turning EIST off?<br><br><a href="http://s6.photobucket.com/albums/y218/Nasgul/PD945OCd.png" target="_blank"><img alt="" src="http://s6.photobucket.com/albums/y218/Nasgul/th_PD945OCd.png" style="border:0px solid;"></a><br><br><br>
BTW, My Core 2 Duo runs at 2.0ghz with EIST enabled and full 3.0ghz when it kicks it into gear.
 

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i remember someone had stability issues when EIST was on, and it was more stable with EIST off
 

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Both, Conroe and Presler are stable at the speeds I'm using.<br><br>
At stock or barely overclock, EIST shouldn't be turned off IMO, I haven't experienced any stability issues.
 

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I haven't found much difference in how high I can overclock with C1E and speedstep on or off. C1/speedstep can disrupt some programs from running smoothly such as audio recording software.<br />
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One thing I have noticed with recent bios updates(for at least the P5w dh) is that it says you cant change vcore unless you disable C1E and speedstep. It also locked my previously unlocked multi on my Presler.
 

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thanks for pointing that out JPM,<br />
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but anyways brock, EIST is lowering your clock speed, and it isn't a problem<br />
Its your choice to disable it or not, and if you could tell us IF enabling it disables vCore adjustment
 

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Discussion Starter #12
Ive watched the core speed in CPU-Z and your correct it kicks from 2.4 to 3.2GHz when i run a demanding application like a game. I cant do hardly anything at the moment in the way of bios settings because if you look at my spec ive got the standard mobo compaq provide with the presario. Im getting an ASUS p5b deluxe next week so i will keep you up to date as to wether Eist being enabled disables the vCore adjustment.<br>
What do you think is best? keeping the EIST on or off? I would think that its a great way to look after your CPU especially when youve got a good overclock. Did you say you had a P D @ 4.5 GHz that dropped to 3.1 GHZ when idle with EIST enabled? If youve got a good oc like that your bound to be generating bags of heat so the drop sounds like a great way of keeping the temp down if your not running anything to demanding.<br>
Could you give me a bit more info on your Pentium D @ 4.5GHz, im interested to learn about intel overclocks more as this is my first intel project (A practice run before i upgrade to the core 2 extreme and give the Pentium D to my daughter!).<br>
Thanx!<img alt="" class="inlineimg" src="/images/smilies/thumb.gif" style="border:0px solid;" title="Thumb">
 

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keep EIST on,<br>
for overclocking the 940, you will need a better CPU HSF, as well as better memory,<br><br>
the mobo your getting is great for overclocking too
 
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