What exactly is this?
Has anyone seen something like this before?
Has anyone seen something like this before?
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Re: Strange SDRAM DIMM
Yep seen them before. Its just a 16 chip stick with all the chips on one side vrs 8 chips on each side. -
Re: Strange SDRAM DIMM
Since it has 2 holes on the pin line, it's SDRAM. It has 2 x 8 chips so it's not ECC, it's regular sdram.
Since the chips are 10 ns rated, it's probably at some low frequency.. 133 Mhz, 128 or 256 MB SDRAM.
ps. double the size if it has on both sides... but they could have resorted to just using low capacity chips to save money.Comment
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Re: Strange SDRAM DIMM
10ns is PC66 or PC100. And that's actually a 64MB stick... those are the old 4Mx4 chips that were used on the very early SDRAM DIMMS.Since the chips are 10 ns rated, it's probably at some low frequency.. 133 Mhz, 128 or 256 MB SDRAM.Comment
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Re: Strange SDRAM DIMM
Yes, you're right. I stand corrected.
I remember now I had memory modules with 7ns chips at 133 Mhz on my first computer, an AMD K6-2 333 Mhz. So the 10ns should be slower.
The chip above is hy57v164010b ... so it's 64 MB @ 100 mhz.Comment
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Re: Strange SDRAM DIMM
It came out from an old Pentium2 PC.Comment
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Re: Strange SDRAM DIMM
No, it came from a car. A Hyundai to be exact
I love putting bad caps and flat batteries in fire and watching them explode!!
No wonder it doesn't work! You installed the jumper wires backwards
Main PC: Core i7 3770K 3.5GHz, Gigabyte GA-Z77M-D3H-MVP, 8GB Kingston HyperX DDR3 1600, 240GB Intel 335 Series SSD, 750GB WD HDD, Sony Optiarc DVD RW, Palit nVidia GTX660 Ti, CoolerMaster N200 Case, Delta DPS-600MB 600W PSU, Hauppauge TV Tuner, Windows 7 Home Premium
Office PC: HP ProLiant ML150 G3, 2x Xeon E5335 2GHz, 4GB DDR2 RAM, 120GB Intel 530 SSD, 2x 250GB HDD, 2x 450GB 15K SAS HDD in RAID 1, 1x 2TB HDD, nVidia 8400GS, Delta DPS-650BB 650W PSU, Windows 7 ProComment
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Re: Strange SDRAM DIMM
I've seen such things before with registered server memory. Infact I have a double height reg/ecc PC-133 stick with all BGA chips. might post a pic later, but from what i've seen double heights like that are usually server ram, I never even saw old P2's with double heightCap Datasheet Depot: http://www.paullinebarger.net/DS/
^If you have datasheets not listed PM meComment
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Re: Strange SDRAM DIMM
I tested the DIMM with Intel 440BX board and it didn't work.Comment
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Re: Strange SDRAM DIMM
I used to have some like that.
The only reason they are uncommon is because back in the day modules like that cost in the 100's of dollars.
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I've seen similarly 'stacked' modules in 30-pin and 72-pin RAM.
.Last edited by PCBONEZ; 11-06-2011, 10:07 AM.Mann-Made Global Warming.
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Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
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You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
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Re: Strange SDRAM DIMM
I've also seen SDRAM with two chips on top of each other. At the time, there was no cheaper way to make high-capacity memory modules.Ludicrous gibs!
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Re: Strange SDRAM DIMM
ram wasn't always so complex though.
here's something i still have in my desk... so simple times back then yet so expensive....Attached FilesComment
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Re: Strange SDRAM DIMM
Yep, like this - http://www.ebay.com/itm/M37S64A-15-O...-/370255160561
But with the newer memory chips.Ludicrous gibs!
Comment
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Cap Datasheet Depot: http://www.paullinebarger.net/DS/
^If you have datasheets not listed PM meComment
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Re: Strange SDRAM DIMM
It's not registered.
Would need one or two more IC's [which would contain the registers].
http://en.wikipedia.org/wiki/Registered_RAM
Some 440BX do take registered.
Look up Intel N440BX.
It takes either-or.
I've seen 30-pin modules with 36 chips to a module.
- And they weren't piggy-backed.
Very tall for a RAM module.
RAM like in the OP wasn't really that unusual back in the day but it was expensive so lower production.
They either piggy-backed or made them tall to get more RAM on the stick.
If you want to see something actually rare look up SIPP RAM module.
RAM modules with round pins. I once had a PC that used them.
Bugger to find those!!! [Even back then.]
[edit] Found pic.
http://en.wikipedia.org/wiki/SIPP_memory
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.Last edited by PCBONEZ; 11-08-2011, 11:26 PM.Mann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
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Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
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Comment
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Re: Strange SDRAM DIMM
You can get a lot about what RAM is by where the keys are.
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This is the OP's RAM with they 'codes' overlaid.
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It's run of the mill 3.3v Unbuffered SDRAM.
.Attached FilesMann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
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Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
-
Comment
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Re: Strange SDRAM DIMM
Better pic from an old mobo manual...
.Attached FilesMann-Made Global Warming.
- We should be more concerned about the Intellectual Climate.
-
Be who you are and say what you feel, because those who mind don't matter and those who matter don't mind.
- Dr Seuss
-
You can teach a man to fish and feed him for life, but if he can't handle sushi you must also teach him to cook.
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Comment
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Cap Datasheet Depot: http://www.paullinebarger.net/DS/
^If you have datasheets not listed PM meComment
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Because of the sound from the speaker when the amp turns on I have assumed that the output section probably works but I could be wrong & I'm not sure how to test that side of things further.
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Hi!
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