JEDEC DDRII standard voltage is 1.8v. You won't find any memory faster than PC6400 that is rated to do its specified speed at 1.8v though. The issue is that Micron D9GMH seems to have a tendency to fail over time at high voltages--and that threshold seems to be >2.1.
It's really quite unfortunate...the D9GMH memory does a fantastic job at clocking high while keeping latency reasonable. It just doesn't seem to tolerate high voltage that well. I have personally had a Corsair 8500C5D stick fail at 2.2v running 1040MHz. I had it replaced and I've backed down to 900MHz 1:1 and 2.1v. The exact incidence of failure is still unknown, but you'll find forums full of people that have dead memory. I did look, and the Mushkin memory you list uses D9GMH. It's hard to find high-performance memory that doesn't. The crazy thing is that the D9GMH is only rated for PC5300...it just seems to scale very well with voltage...at least, until it dies. :) Greg -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Hunter, Gary Sent: Thursday, April 26, 2007 11:53 AM To: The Hardware List Subject: RE: [H] Upgrade questions Thanks Greg, initially I probablly wont overclock but I have overclocked every system I have owned so I guess I will eventually. I've seen a few mentions on the list of Gigabyte boards lately and was going to look at them but I have had Asus for at least the last 8 years and they haven't let me down yet so that was my preference. I was unaware that 2.2v was high for the the RAM, what is the standard voltage for these chips? -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Greg Sevart Sent: Thursday, April 26, 2007 6:32 AM To: 'The Hardware List' Subject: RE: [H] Upgrade questions Are you looking to overclock? If so, take a look at 680i based boards, such as the Gigabyte GA-N680SLI-DQ6. Absolutely wonderful board--I have one--but they're about impossible to find right now. The first production run sold out much faster than expected; stock isn't expected to return for another couple weeks. I love the fact that it has 10 on-board SATA ports and the onboard sound has DTS Connect--I was able to eliminate 3 expansion cards on those features alone. The onboard passive cooling solution works pretty well, though I removed all of it to cool with water. I'd also strongly suggest looking for memory that doesn't require 2.2vdimm+ to meet rated speed. Almost all high-performance memory uses Micron D9GMH ICs, and these do not seem to handle high voltages (2.2v+) for long periods of time. Ideally, though, you would run a 1:1 FSB:MEM ratio and undervolt the memory. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Hunter, Gary Sent: Wednesday, April 25, 2007 11:53 PM To: The Hardware List Subject: [H] Upgrade questions Hi, I'm after some advice, upgrading my old Asus A7n8x deluxe and XP2100. So far I'm sure I will go for: PSU: Thermaltake W0116RU 750W http://www.newegg.com/product/product.asp?item=N82E16817153038 RAM: Mushkin Redline 2GB http://www.newegg.com/product/product.asp?item=N82E16820146114 (I like Mushkin as they are based in Denver and I can just go to their office if I have any issues). CPU: E6600 http://www.newegg.com/product/product.asp?item=N82E16819115003 What I am unsure of is the motherboard, I want a feature filled board similar to my A7n8X deluxe so I was looking at: Asus P5B Deluxe http://www.newegg.com/product/product.asp?item=N82E16813131045 But there are some much more expensive boards that I can't really work out what practical extras I'm getting, are they really better? One of them is the Asus Striker board http://www.newegg.com/product/product.asp?item=N82E16813131074 it looks very cool but does it cost so much more just because of the lights and gimmicky things? Does that fancy cooling system really work or is it just for show. Money is not really a problem (for the first time ever)so I want to get the best but I don't want to waste money. All opinions are welcome. Thanks Gary The information in this electronic mail message is sender's business Confidential and may be legally privileged. It is intended solely for the addressee(s). Access to this Internet electronic mail message by anyone else is unauthorized. If you are not the intended recipient, any disclosure, copying, distribution or any action taken or omitted to be taken in reliance on it is prohibited and may be unlawful. The sender believes that this E-mail and any attachments were free of any virus, worm, Trojan horse, and/or malicious code when sent. This message and its attachments could have been infected during transmission. By reading the message and opening any attachments, the recipient accepts full responsibility for taking protective and remedial action about viruses and other defects. Travelport Inc. is not liable for any loss or damage arising in any way from this message or its attachments.
