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Here are just a few of your letters, I hope that this will answer most all of your questions, if not just ask.
Sun, 17 May 1998 03:40:47 -0400 I was getting a little nervous as the fedex guy didn't show until noon but: I recieved the 3-128 meg pc-100 today(Saturday) as we discussed yesterday. This was very
important to me. I installed the memory, booted up the new se440bx and life is good. Ran set up for ecc. No problems. Running Great. The previous outfit said that they sent pc-100
compliant 10ns but the board wouldn't go for it. Had to return it. I am alot happier knowing that the correct high quality brand name ram is on the board. So, service and quality are excellent. Mark me down as one satisfied Customer.
Thanks again. M T M
Mon, 18 May 1998 11:32:01 -0700
Can a PC100 compliant memory function in a non PC100 compliant motherboard?
dy
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Both of my factory reps indicated yes, that pc100 memory is backward compatible. Just like an eeprom dimm will function in a motherboard that does not require it.
Steve
Fri, 15 May 1998 21:13:35 +0200
What is CAS? Is a rammodule with CAS2 100MHz faster than a rammodule with CAS3 100 MHz? Would you give me a CAS-lesson? Greetings from S
When your computer scans a block of information into or out of a memory module it does so in a repeating pattern of rows and columns. This pattern is synchronized to the bus clock of
your system. Memory with a cas latency of 3 switches from one column to the next column once every three clock tics. Memory with a cas latency of 2 switches from one column to the
next column once every two clock tics. So yes indeed, memory with cas 2 @ 100 MHz is faster than memory that is rated as cas 3 @ 100 MHz. I am working on an animated illustration of this concept, that will be placed at our website at
www.pc100.com Please check back in a few days as I hope to have it done soon.
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Howdy:
> I have several questions regarding pc-100 memory. I have been looking for pc-100 memory for a long time, and I haven't seen any one describes their memory specs this detail. There are
three brands of pc-100 memory that I concern right now( Samsung, Goldstar, and Hitachi). I know that Hitachi has 6 ns pc-100 memory in the market right now. Are they really running at
6ns? Which of these three brands is most stable for running at 133 mhz? Also A.... (www.a......com) sells Goldstar 7 ns 64 MB pc-100 memory for only $129, why your price is so expensive?
>
> Please reply, thank you!
It is my understanding from the engineer at one of my memory factories that the -6 Hitachi parts are not 6ns, for that matter they are actually plain 10ns at that. Go figure. I tend to get
excited about the new technology myself, but since I find myself in the position of "acting know it all" I have been checking the facts. I fell for that one myself until I talked with the
engineer who tests the modules personally. The only parts from Gold Star that I know about are not just 7ns but also cas2 @100 MHz are marked GM72U66841DT-7K. The parts that are marked -7J are cas3 @ 100MHz
RULE of THUMB... things that seem too good to be true usually are.
If I were you I would be on the phone first asking if that is a typo there. Second calling some
of their references and asking if they ever heard of them. If these guy's are for real I will start another subsidiary just to market their products and take a ten per cent margin. Please note:
the top of the page advertising this "pc100" memory has the following notice at the top of the page.
As far as overclocking to 133 MHz I haven't the slightest clue. The best references I can suggest are at
If Tom thinks and says that you are crazy to try a particular kludge I would tend to trust his word, he has been at the burnt smoking silicon melted back into plain sand messy ragged
bleeding edge for a while now. The highest bus speed number that I saw there was 112 MHz I quote" I consider everyone as really crazy, who runs his business software on a system
with a highly overclocked Deschutes CPU. Nevertheless, keeping in mind that you can run into system crashes at any time, overclocking works pretty well in the following cases: Pentium II 333 to 350/100, careful at 400/100 People that overclock to more than that either post this to make themselves look important without using the system at this speed or they must be considered as a bit crazy. "
I hope that helps, if not perhaps you should look into starting an overclockers anonymous web site.
Thank you SO MUCH! for your WWW.PC100.COM page. I am retailer and my customer was baffled when my RAM prices were TWICE those he was checking out. My prices are usually the best he sees and he buys from me all the time. So I
went investigating, and thought, SOMEONE must have SOME info and a shot in the dark I entered in www.pc100.com intomy browser. Thanks for taking the time to explain it properly and thoroughly. My customers can now be
better informed, and it makes me and my business, once again, on top of the myths and mis-information. D at M E
please visit http://pc100.com/memory.html for current prices. ecc is usually one extra chip for each eight chips, that is one extra bit for every eight bits for
error checking purposes. ecc is for network servers and mission critical applications. Quality can be often relative to performance demanded. Memory that has great safety margins at 66 MHz can crash hard at 100 MHz.
We sell ONLY grade A, major manufacturer memory chips constructed to OEM/JEDEC standards on quality PCB's. Both of our factories are quality certified to ISO-9002 and or
ISO-9001 international standards, and are located here in the USA. All memory comes with a lifetime replacement warranty. You may find memory that costs less, but be sure to ask if it is
Grade A, OEM, JEDEC standard quality, to protect your valuable data. Please let us know if we can help! Steve and Nicole Frahm the Memory Store
*ALL SIMM SPEED IS 60NS. ALL DIMM SPEED IS 10NS, SDRAM IS UNBUFFERED.
MHz FSB) Pentium II 350 to 392/112, possible L2cache issue, possible PC100 SDRAM issue at 112
Mhz Pentium II 400 to 448/112, possible L2 cache
issue, possible PC100 SDRAM issue at 112 Mhz
Could you give me the specs listed on the DIMM itself? I'm particularly interested in both the number and letter combination that defines the chip type and the PC100 spec listed on the
chip (the PC100 spec lookslike 'PC100-XXX-XXX' where X represents an unknown number). If the DIMM is actually a CAS 2 @100mhz, then the spec will be PC100-222-XXX. The PC100
spec defines the operating parameters that the SPD EEPROM will report to the motherboard and that the chip will operate at... Thanks!
J Z
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Thank you for your excelent question. I finally got with the engineer at the factory today who tests conformance with the specifications and got my facts straight. I have both 8ns and 7 ns
parts available now with the PC100-222-620 specification. They are fast movers so at times I may have a one day lead time maximum on a specific configuration.
> What is your price for a 128MB SDRAM 3.3V 8ns 16X64SD8N DIMM?
> Also, I've seen PC100 memory advertised as being available in ECC. Is this available or is this just an advertising scam? After reading your article at www.pc100.com, I have the
impression that high standards are already built into PC100 memory because of the speed it runs at and therefore, ECC is already built into the architecture of the memory module.
However, if I am wrong about this and ECC isavailable in PC100, would it be worth the purchase and what are the benefits over standard PC100 memory? Thank you,
> T S
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Howdy:
http://www.memorysource.com/ http://www.pc100.com/
800-989-4RAM (4726) 1-915-856-8647
On 23 Apr 98 at 8:02, LNUS wrote:
> Can SDRAM other than PC-100 complient be used on the BX boards?
It is my understanding that yes, the non pc100 memory should work, but at only 66MHz bus speed. That is1/3 slower than the 100MHz bus speed available on a BX motherboard. I intend
to put up a couple of shareware benchmark programs for potential customes to download to facilitate proving who's memory runs the fastest.
> From: C N
> Web site is great, easy to use. Your prices stink. "brand X" makes their own stuff, have a lifetime warranty, and prices are LESS than HALF of yours. Sorry, maybe you should buy
from them. They are in California somewhere, try the 1-800 directory because they have a toll-free number. Later -
Thank you for your criticism. I will check out "brand X" , but only sell modules made in USA with grade A chips. I have been wondering however, where everbody has been getting all of the cheap stuff from. Howdy:
I called S at "brand X" today with thanks, they may be a new source for my volume customers, we shall see. I am going to place an initial test order with them tomorrow. Anyway,
they do not have any 125 MHz -8 nano-second parts in stock at all for another week or two, their prices are for 100MHz -10 nano-second modules. Late-
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Howdy:
On 23 Apr 98 at 1:30, C N wrote:
> Date: Thu, 23 Apr 1998 01:30:03 EDT
> To: steve@memorysource.com
> Subject: Your Prices
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Howdy:
You do get what you pay for!
S
www.pc100.com is from the folks at
the Memory Store