Author Topic: AKDeJavu / Bloom25: About Intel CPUs (Read 350 times)

Staga · « **on:** October 17, 2002, 06:07:59 AM »

I may build a new computer and I was thinking about P4 CPUs. When PIII was still hot there were some processors which were easier to overclock, like my old PIII 700 SL45Y which was running 933Mhz after I did turn the FSB to 133Mhz.

Do you know if there are gems like that, I've heard some good things about P4 2.5Ghz ?

What's the story with DDR / RIMM:
Does P4 get any benefit from RIMM memory and how would it work with PC2100 (already have 768mb)?

Shop I usually use is also having Corsair PC3200 (200Mhz) and PC3500 (217Mhz) CAS2 chips, they cost a lot so are they worth the money when using asynchronous speeds with CPU/memory ?

Skuzzy · « **Reply #1 on:** October 17, 2002, 06:50:52 AM »

Staga, any of the current generation P4 Northwood's and later are overclockable.

In one system I have at home, I started with a 1.8Ghz, which is now running at 2.4Ghz. ASUS has a couple of motherboards that are very nice for the overclocker (almost all the current motherboards for the P4's from ASUS have a very nice heat sink on Northbridge). I dropped in some 400Mhz DDR ram and cranked the FSB up. Runs like a champ.

You'll find the stock HSF for the P4's does the job just fine as well. Get rid of the tape on the heat sink and use some Artic Silver and you can go nuts without fear of heat problems.

With the speed of DDR today, I cannot see using RIMM memory any longer.

Gunthr · « **Reply #2 on:** October 17, 2002, 07:22:37 AM »

I have had the same good experience with my Intel 2.8 ghz, which is running at 3.3 ghz right out of the box.

I have an ASUS P4B533-E which has the feature where you can "lock" the speed of AGP/PCI to keep them running in spec while you raise the FSB. If you go Intel, I would insist on a board that has this feature.

Vermillion · « **Reply #3 on:** October 17, 2002, 08:55:24 AM »

So Skuzzy, would you recommend going with the P4 then over the new 333Mhz FSB Athlons?

I'm looking at a new system in the next couple of months, and I was leaning towards the newer Athlons. Mostly that was because the prices seemed much higher on the P4's.

AKDejaVu · « **Reply #4 on:** October 17, 2002, 08:59:30 AM »

Out of my league. I've never OC'd a processor before. Its always seemed to be a marginal gain for the risk involved. The 366A Celerons are the only chip I could really understand people playing with.

One thing that would be interesting to know...

Would the 2.4G/400MHz processor be better for overclocking than the 533MHz processors?

AKDejaVu

Skuzzy · « **Reply #5 on:** October 17, 2002, 09:40:33 AM »

I think the 400Mhz CPU's are better for overclocking purposes.

I am like you Deja. I only have that one system I overclocked, just to play with it. The dang thing is stable as can be. Hehe,..a 600Mhz gain in clock is not what I call trivial. But I do have to say, I think Intel messed up on my CPU. It says it is a 1.8 on the chip, but when I stuck it in the system, the BIOS detected it as a 2.4Ghz.
From there I bumped the FSB.

Now, my 2.5Ghz/533 bad boy, I have left at stock and will leave it at stock.

Vermillion,..the Intel's are more expensive, but the one thing I really do like about the newer P4's is how cool they run. Allows a very quiet case, without resorting to water cooling.
Personally, I just have not seen the problems with Intel chipsets that I see with other chipsets.
I think AMD's are great for the tinkerer, and the guy that really knows his stuff, and I approach Intel as the basic thing a guy should use if they do not have a clue about hardware or just do not want to fiddle with it.

Vermillion · « **Reply #6 on:** October 17, 2002, 10:19:49 AM »

So would it be unreasonable to purchase the P4 2.4Ghz/400 FSB and overclock the FSB up to 533 to get approx a 3.2Ghz? Anyone done this yet?

Animal · « **Reply #7 on:** October 17, 2002, 10:58:15 AM »

I have never lost a CPU due to overclocking.

To me, overclocking is half the fun; like people tweaking their cars.

An overclocked CPU may last 2 years less than a normal CPU. Whats the lifespan of a CPU? around 40 years. I dont plan to have my processors that long.

I am currently running an Athlon XP1600+
(1,400Mhz 133FSB) at 1,600MHz 152FSB

The speed increase is not trivial, at all. And the temperature is the same as at normal speed (I only raised the voltage a notch)

Staga · « **Reply #8 on:** October 17, 2002, 12:57:44 PM »

From Intel's site:
533MHz system bus: 2.80 GHz, 2.66 GHz, 2.53 GHz, 2.40B GHz, 2.26 GHz
400MHz system bus: 2.60 GHz, 2.50 GHz, 2.40 GHz, 2.20 GHz, 2A GHz, 2 GHz, 1.90 GHz, 1.80 GHz, 1.70 GHz

Guess CPUs with 400MHz bus would be easiest to overclock?

What's the thing with Intel chipsets:
Looks like only 845GE and PE are supporting DDR333?
I have couple DDR266 chips, would it be waste of money to buy DDR333 for intel based board?

Any idea how well other chipsets for P4 works (SiS 645DX or VIA's P4X400) ?

Thanks for all replies, I haven't played with Intel's stuff in years, gotta learn some things first before going to store

Staga · « **Reply #9 on:** October 17, 2002, 01:04:22 PM »

This looks nice

Gunthr · « **Reply #10 on:** October 17, 2002, 01:28:16 PM »

Staga, you can apparently run your ram at DDR 333 to DDR 400 speeds on an ASUS P4B533 series mobo by flipping an undocumented dipswitch (#6)... you need good ram though.

dipswitch 6 trick

Vermillion · « **Reply #11 on:** October 17, 2002, 05:19:20 PM »

I've been reading the websites all days. Anandtech and Tomshardware both reccommend either the SiS 648 chipset or the Intel 845G, both of which support the DDR400 memory. With the nod going to the SiS648 chipset because it has more features, including AGP x8.

If you want the high end they reccommended the Shuttle motherboard, or the bargain end the Abit.

Doing more research myself right now.

But this looks to be a good deal right now. Newegg.com has a special at $185 for a Retail P4/2.4Gz/533FSB. Which the overclocking sites are getting up to about 3Ghz with good memory.

But by the time I get that, the memory, case, and a Radeon 9700 to go with it, it will be about a $1k upgrade. But oooohhhh baby would it be a screamer !!