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256MB Infineon ram cl2 or cl3?

D

DieHardware

Golden Member
Just bought a 256MB stick of Infineon ram from OEMexpress that is advertised as cas 2 with HY13395128800CT-7.5 0116 C2 SSS20172 printed on the chips. SiSoft2k says they're 256MB 16x(16Mx8)SDRAM CL3 PC133U-333-542. Could somebody tell me if this ram is CAS2 or 3? I paid quite a premium over regular ram. Should I take it back?
 
I have that memory, and they may have advertised it wrong, it is Capable of doing cas2 but its concieved as cas3. Atleast from what i know. The highest it can overclock also is around 150cas2-160cas3. FYI, but thats MO.
 
It is CAS2 officially at <133MHz and CAS3 officially at >=133MHz. But it apparently can do CAS2 at 133MHz. You will have to ignore SPD timing and adjust CAS latency manually if you'd like to run CAS2 at 133MHz though.
 


<< You should have bought your RAM from Crucial... then you would know. 😉 Probably cheaper too. >>




nice crapping there.

 
Thanks for the replies guys. ReMeDy{WcS} I just finished doing a search at the Infineon site and I couldn't find a description of our ram.🙁 Here are the 256MB sticks their site shows are available linky1 &amp; linky2 I could've bought the Infineon cas3 at DealsDirect(phoned them and they said their Infineon was cas3 but its probably the same as OEM's-damn you OEM!) for 12 bucks cheaper.
 
OK guys I ran some memory benchmarks on my KT7A-raid using a D650 set to 133x 6 then 136x6 with the memory set to turbo and 4way interleave on and got CPU 520MB/s and FPU 578MB/s and 533MB/s and 592MB/s. This rams not bad.🙂 GL what's the SPD timing? Bangsailio it felt like sheep manure😉
 
it should be HYB39S128800CT-7.5, not 13 and 5.

you should also use ctspd to check the spd,
if you get &quot;ok&quot;, &quot;intel 1.2 spd&quot;, it's fine.

how much did you pay?
they advertise it as cas2 is cheating, false advertisement, as HYB39S128800CT-7.5 is officially defined as pc133 cas3 though some can overclock to 150 cas2 (Mushkin rev3).

here is the datasheet:
http://www.infineon.com/cmc_upload/0/000/018/329/SDRAM_128M.pdf

do you know viking (uses this chip) from amazon is $59 after coupon free shipping?
you should only buy this one if you want infineon.
 
Sorry if I offended you. I didn't mean it that way. 😱 I have been hosed a lot of times by 3rd tier companies selling crap memory or sending the wrong stick of memory, Memory Man comes to mind. Anyways, sorry.
 
yes, don't buy unknown made memory even the chips are infineon, micron, etc.
you don't know how good is the pcb, the soldering process, the qc, the spd.
and with the crazy price of Crucial, Viking, Kingston, etc today,
how can you consider cheapy (or more expensive) generic?
generic medicine is ok, generic computer stuff is not ok.
 
Don't worry about it, that WASN'T thread crapping, that's only possible in For Sale/Trade threads. I don't know why people bring this up in other forums...
 
Kingofcomputer you are right about the S and B, my bad, can't read my own writing.😱 I payed $89Cdn(57.85US) but Deals has it for $79Cdn(51.35US)Arrgghhh! Oh and thanks for the Infineon link.🙂 Splice no offence taken just havn' a little fun.
 
$51 seems to be ok.
remember to check the spd using ctspd,
and you'll know who makes this memory module.
please come back to tell me, I'm interested to know how's the spd writing from generic infineon memory.
 


<< Should I take it back? >>



That depends. Does it run at 133 222? Some vendors consider 233 CAS2. For boards without any memory timings adjustments other than CAS 2 or 3 setting it to 2 results in 233 timings. Technically 233 could be CAS2 but is not as fast as 222. (obviously) Kind of like some gasoline at 91 octane is considered premium, yet the brand name premiums are 93.

16MB chips (usually) don't have any problem running at CAS2 even higher than 133 MHz. Of course, buying generic memory means you take a chance on the quality of the pcb. The pcb quality is crucial (pun not intended here!) to the performance and stability of your RAM, particularly at high loads.

Cheers!
 
Kingofcomputer where do I get ctspd? Sharkeeper I have the board set to turbo(don't know if that's 222) with 4way interleave enabled.
 
Thanks Kingofcomputer, downloading now. BTW I set the FSB/memory to 140MHZ(x5.5) and ran Sandra and got CPU 542MB/s and FPU 605MB/s. I'm starting to like this ram, cas2 or not. Update ok on main pg. it reads Intel SPD1.2 F7 ok and in extended display ->manufacturer data -> module manufacturer it reads; 41 4D 5A 4F 52 000.
 
I have the same type of RAM but in 128MB sticks. I was told it could do >140MHz although I can't remember if that was CAS2 or CAS3. The SPD is just a small chip that stores the timing info. On this RAM, the SPD has CAS3 timing for 133MHz and above. But as you can see the RAM does CAS2 just fine. So you just have to tell your mobo to disregard the SPD and manually set the timing yourself.
 
DieHardware,
so what do you see from ctspd?
please post the result of
SPD version
Intel-spec. data
DIMM Manufacturer
Checksum
SPD-EEPROM complete
SPD-EEPROM bugfree

thanks
 
Hi Kingofcomputer, here's the #'s:
  • SPD version-Intel SPD 1.2
  • Intel spec. data-F7, ok
  • DIMM maufacturer- error
  • SPD-EEPROM complete, ok
  • PC100 compatible, 133
  • Checksum-b0, ok
  • DIMM type, unused, 00
  • SPD-EEPROM bugfree, ok
There is more info in my 12:18AM post and btw thanks for all the help. Oh and can someone point me to the info on how do you do a regular list and paragraphs(don't see it in symbols), thanks.
 
The chips are very much capable of 150MHz / Cas2. Do not discount this ram! I have many happy customers running this at faster speeds than Micron. True, most SPD are CL3, but you can adjust them in bios, and you may be surprised to find the ram will work at CL2, even at 150MHz+ 🙂
The PCB quality must be there, as kingofcomputer stated.
 
Arn't most CL2 RAM 233 unless actually spessified as 222. Aren't the 2 + 3 numbers RAS precharge time latency and RAS-CAS delay rate.
 
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