I would like to know what the best ram for a 440bx board is. I would like to overclock the ram to 140-150mhz without increasing voltages or relaxing the timmings. The ram must also be low density because it is going on a 440bx board (i would like to get 2 modules of 256mb). ALso what speed do agp/pci cards start running unstably at?
Best sdram
- Thread starter pIII_Man
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150FSB - That's tuff on air cooling!!!
The only sdram i'v ever got above 150 is Neutron PC150 "Certified" Server grade.
It's still around http://www.neutronexpress.com/findme.cfm#2097, but i don't know if its the same stuff, its now listed as "Legion" PC150 Server Grade, where it used to listed as Neutron Brand "Certified" PC150 Server Grade. When I ordered it (maybe 2 yrs ago), they told me that it was hand selected and tested 150+ CAS2... I still have it, and it WILL go right past 150! That's if it the same stuff.
Be forwarned - 150FSB is a REAL TUFF NUT TO CRACK with an intel CPU!
140-144 pretty easy - 150 TUFF! I got a bit obsessive and threw a lot of money at 150 - including the best Crucial and Corsair had, and neither would do it (thus my experience and opinion of Crucial (which wouldn't even come close, wouldnt even post past 142) and Corsair ( which did better, ran at 144 but gave errors) isn't very good! - Neither worth the money and no more for me!!!)
If ya want a real shot at 150, find a place that "Certifies" PC150 with hand selection and testing! And the only intel cpu that i ever got past 150 is a PIII667, a 133fsb to start with and low multplier(5) on a VIA chipset(mobo's DFI TA64b or Asus P3v4x). My old abit BE6II 440BX just wouldn't get there...
Per my humble opinion, be happy with reasonable brand PC133 Cl2 and save your money for a DDR mobo upgrade - DDRam literally starts out with over TWICE the mem bandwith youll ever get from SDRAM - and the sooner ya get there the better...
The only sdram i'v ever got above 150 is Neutron PC150 "Certified" Server grade.
It's still around http://www.neutronexpress.com/findme.cfm#2097, but i don't know if its the same stuff, its now listed as "Legion" PC150 Server Grade, where it used to listed as Neutron Brand "Certified" PC150 Server Grade. When I ordered it (maybe 2 yrs ago), they told me that it was hand selected and tested 150+ CAS2... I still have it, and it WILL go right past 150! That's if it the same stuff.
Be forwarned - 150FSB is a REAL TUFF NUT TO CRACK with an intel CPU!
140-144 pretty easy - 150 TUFF! I got a bit obsessive and threw a lot of money at 150 - including the best Crucial and Corsair had, and neither would do it (thus my experience and opinion of Crucial (which wouldn't even come close, wouldnt even post past 142) and Corsair ( which did better, ran at 144 but gave errors) isn't very good! - Neither worth the money and no more for me!!!)
If ya want a real shot at 150, find a place that "Certifies" PC150 with hand selection and testing! And the only intel cpu that i ever got past 150 is a PIII667, a 133fsb to start with and low multplier(5) on a VIA chipset(mobo's DFI TA64b or Asus P3v4x). My old abit BE6II 440BX just wouldn't get there...
Per my humble opinion, be happy with reasonable brand PC133 Cl2 and save your money for a DDR mobo upgrade - DDRam literally starts out with over TWICE the mem bandwith youll ever get from SDRAM - and the sooner ya get there the better...
well i have a 700mhz pIII so i do have a pretty high multiplier to begin with, i have heard that these can get up to 933mhz with stock cooling, so i figured with a little aftermarket cooling 140-150mhz would be possible, however i guess my chipset is a little weak, i'm not sure what to do about that without getting a new board which i would be better off getting one for a athlon xp than a pIII. Whats the best cas2 pc133, maybe i should get that and try to shoot for 133-140mhz.
PC133 sdram comes in two flavors... 7.5ns and 7ns
Both say they can run 133 at CL2/CAS2, BUT ya get have a lot better chance of reliability and OC with 7ns stuff. Micron, Kingston, Samsung all make the good 7ns CL2 stuff...
If it doesnt explicity say 7ns CL2 - it propably aint the good stuff!
But most likely any good brand explictly stating 7ns CAS 2 will tak ya to 142fsb reliably.
Don't really know whos got good pc133 anymore.
Google "pc133 7ns CL2" or CAS2... I know
Micron Technology 256MB PC133 (CAS2) SDRAM 7ns Gold Leads
is easy to find...
(as opposed to Crucial 256MB 32Meg x 64 PC133 SDRAM, 168-pins DIMM, CL=2, Unbuffered, Non-parity, 7.5ns, 3.3V - AT MORE THAN TWICE THE PRICE!!!!
note the 7.5ns! might be low-latency, but where's the beef(speed!!!)
Wherever/whatever ya get, your best memory will be explicily stated as 7ns CL2 and it'll take ya where ya want to go...
Both say they can run 133 at CL2/CAS2, BUT ya get have a lot better chance of reliability and OC with 7ns stuff. Micron, Kingston, Samsung all make the good 7ns CL2 stuff...
If it doesnt explicity say 7ns CL2 - it propably aint the good stuff!
But most likely any good brand explictly stating 7ns CAS 2 will tak ya to 142fsb reliably.
Don't really know whos got good pc133 anymore.
Google "pc133 7ns CL2" or CAS2... I know
Micron Technology 256MB PC133 (CAS2) SDRAM 7ns Gold Leads
is easy to find...
(as opposed to Crucial 256MB 32Meg x 64 PC133 SDRAM, 168-pins DIMM, CL=2, Unbuffered, Non-parity, 7.5ns, 3.3V - AT MORE THAN TWICE THE PRICE!!!!
note the 7.5ns! might be low-latency, but where's the beef(speed!!!)
Wherever/whatever ya get, your best memory will be explicily stated as 7ns CL2 and it'll take ya where ya want to go...
- Dec 31, 2007
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<A HREF="http://search.ebay.com/search/search.dll?cgiurl=http://cgi.ebay.com/ws/&krd=1&from=R8&MfcISAPICommand=GetResult&ht=1&SortProperty=MetaEndSort&query=mushkin+PC150" target="_new">Buy These</A>, they are the best you can get for a BX chipset board, and come from a very reliable seller!
The Mushkin Rev. 3+ 256MB modules have 16 chips, which make them the max per slot the BX allows.
<font color=blue>Watts mean squat if you don't have quality!</font color=blue>
The Mushkin Rev. 3+ 256MB modules have 16 chips, which make them the max per slot the BX allows.
<font color=blue>Watts mean squat if you don't have quality!</font color=blue>
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Your chipset is VERY STRONG, it's the fastest chipset ever made for the PIII! I wouldn't give one up. I'm a builder and have had MANY of the BEST PIII boards, and nearly all my BX boards offered more performance than nearly all of my other boards! The next down was the i815E, but it couldn't compete with the BX.
Oh, the BX is also the most stable and compatable chipset ever made for any processor.
<font color=blue>Watts mean squat if you don't have quality!</font color=blue>
Oh, the BX is also the most stable and compatable chipset ever made for any processor.
<font color=blue>Watts mean squat if you don't have quality!</font color=blue>
Oh Boy! PC150 Hand picked and tested! There ya go...
And I never said BX was weak... They're like rock reliability++.
I'm not even thinkin about replacin mine yet. Just too smooth...
Crash has the best little formula i've ever seen for FSB requirement.
(1/ns) * 1000 = FSB
(1/7)*1000=142.85
(1/6.5)*1000=153.83
If ya want 150+fsb, ya gotta have error free oppreation at 6.5ns...
That's hot stuff(and rare) for sdram!
And I never said BX was weak... They're like rock reliability++.
I'm not even thinkin about replacin mine yet. Just too smooth...
Crash has the best little formula i've ever seen for FSB requirement.
(1/ns) * 1000 = FSB
(1/7)*1000=142.85
(1/6.5)*1000=153.83
If ya want 150+fsb, ya gotta have error free oppreation at 6.5ns...
That's hot stuff(and rare) for sdram!
Yes i saw those sticks on ebay too. Don't worry crash this board has a long life ahead of it (it will be retired to websurfing this september but will prolly be used for another 2 years, its replacing an amd k6-2). Those modules do look pretty hot and if the price stays below that of the $60 crucials then i may post bids. The only thing is, what can i do to prepare my board for this o/c, crash have you ever gotten a bx to 150mhz? And did you have to put some serious northbridge cooling? Also what about the Agp speed, i have heard that the pci automatically divides by 4 at 133mhz on the latter revisions of the bx boards, so assuming i have a late model (which i beleive i do) can my graphix card run at 100mhz because i have heard of no dividers more than 2/3 for agp? My card is a Rage Pro (Ati). Is there anyway for me to see if my cpu is a latter revision? For cooling i am using a large oem passive heatsink with a 92mm 62cfm fan mounted on it. I beleive that should give me good results, and should allow for some voltage increases. Any tips would be appreciated.
Just out of curriosity were any 6.5 ns modules made, or only high quality 7ns modules? I beleive the mushkins are using 7ns winbound chips but i will have to check on that...
Just out of curriosity were any 6.5 ns modules made, or only high quality 7ns modules? I beleive the mushkins are using 7ns winbound chips but i will have to check on that...
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Yes, I've ran 150MHz bus on the BX. It doesn't require any extraordinary cooling, most boards run fine simply by pulling the cooler and putting a small dab of heatsink paste under it. I ran a Pentium 300 at 150x2 on an old Abit board with an ATI Radeon, and got HUGE points in 3D-Mark 2001! The extra bus speed really helps!
As for Mushkin, they buy batches of first grade chips, then test them at higher speeds. The ones that pass go on their high speed memory, the ones that fail...I think get resold to OCZ or something.
<font color=blue>Watts mean squat if you don't have quality!</font color=blue>
As for Mushkin, they buy batches of first grade chips, then test them at higher speeds. The ones that pass go on their high speed memory, the ones that fail...I think get resold to OCZ or something.
<font color=blue>Watts mean squat if you don't have quality!</font color=blue>
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You should go ahead a bid $60 now, if you win with that bid you'll be happy, and if it goes higher than that bid I'll be happy. So bidding early in these auctions is a win/win proposition.
<font color=blue>Watts mean squat if you don't have quality!</font color=blue>
<font color=blue>Watts mean squat if you don't have quality!</font color=blue>
would 128mb, high density modules work in my board. I beleive the 128mb modules should, but i'm not sure. I may post a bid tomarrow, we'll see, no doubt they are good modules, the question is do i wana spend the money on nice memory when my board possibly won't be able to take advantage of it.
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Some will, others won't. The BX/LX/EX/TX chipsets have a strict limit which works out to 16MB/chip. Let me give you a rundown of what works:
1. 256MB, 16 chip double sided
2. 128MB, 8 chip OR 16 chip
3. 64MB, 4 chip OR 8 chip OR 16-chip
4. 32MB, 2 chip OR 4 chip OR 8 chip OR 16 chip.
Plus most smaller chips.
So you see, it's a maximum of density that's the concern. While most 128MB chips as late as a year ago were 8 chip, some were 4 chip or even 2 chip.
Most of the boards in service that use SDRAM use one of the chipsets listed. So why do they make memory that won't work? Cheapness. It's cheaper to use fewer chips of greater density. If you complain that it doesn't work on your board, they tell you it's your fault.
Now if you go to Crucial's website, you can look up the memory for almost any BX board, and it will be the same part numbers as memory for almost any other BX board. So if you don't see your board on their selector, choose a good BX board that supports 133MHz bus, such as the Abit BE6-II, and buy that memory.
I'd rather have you buy this PC150 though, I need the money more than they do!
<font color=blue>Watts mean squat if you don't have quality!</font color=blue>
1. 256MB, 16 chip double sided
2. 128MB, 8 chip OR 16 chip
3. 64MB, 4 chip OR 8 chip OR 16-chip
4. 32MB, 2 chip OR 4 chip OR 8 chip OR 16 chip.
Plus most smaller chips.
So you see, it's a maximum of density that's the concern. While most 128MB chips as late as a year ago were 8 chip, some were 4 chip or even 2 chip.
Most of the boards in service that use SDRAM use one of the chipsets listed. So why do they make memory that won't work? Cheapness. It's cheaper to use fewer chips of greater density. If you complain that it doesn't work on your board, they tell you it's your fault.
Now if you go to Crucial's website, you can look up the memory for almost any BX board, and it will be the same part numbers as memory for almost any other BX board. So if you don't see your board on their selector, choose a good BX board that supports 133MHz bus, such as the Abit BE6-II, and buy that memory.
I'd rather have you buy this PC150 though, I need the money more than they do!
<font color=blue>Watts mean squat if you don't have quality!</font color=blue>
lol crash man, if the price doesn't go above $60 per stick i'll prolly make a bid.
Whats the highest vcore my 1.65v pIII can take w/o worrying about electromigration (or whatever its called) and is their any good webpage that explains the vmod, i know what pins are respnsable for the vcore, but not what voltage each combo equates to.
Whats the highest vcore my 1.65v pIII can take w/o worrying about electromigration (or whatever its called) and is their any good webpage that explains the vmod, i know what pins are respnsable for the vcore, but not what voltage each combo equates to.
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I'll send you a brief I wrote a couple years ago showing everything you need (or if you know how to read tech data, you can download the info from Intel). You'll have to PM me an email address for me to send my article to.
I'd say 1.95v should be safe, from experience, but you might get your best overclock at something lower, depending on heat mostly.
<font color=blue>Watts mean squat if you don't have quality!</font color=blue>
I'd say 1.95v should be safe, from experience, but you might get your best overclock at something lower, depending on heat mostly.
<font color=blue>Watts mean squat if you don't have quality!</font color=blue>
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