DDR3 with both EPP 2.0 & XMP support "is possible" - bit-tech.net Forums

Tim S · 24th Mar 2008, 15:50

http://www.bit-tech.net/news/2008/03...ort_possible/1

DDR3 memory modules supporting both EPP 2.0 and XMP are technically possible, but it may not happen because of the branding nightmare.

naokaji · 24th Mar 2008, 16:10

Both XMP and EPP are nothing more than saved profiles... just oc on your own and you dont need either, or get a mainboard that allows you to save various bios settings, then you not only have the memory oc saved, but everything.

Tim S · 24th Mar 2008, 16:13

Quote:

Originally Posted by naokaji

Both XMP and EPP are nothing more than saved profiles... just oc on your own and you dont need either, or get a mainboard that allows you to save various bios settings, then you not only have the memory oc saved, but everything.

You're clearly not in the target market though, like I said in the article. Many don't use them at all, because they prefer to tune their memory themselves, but those that don't know how or don't have time to do that will obviously look towards features like this.

ryanjleng · 24th Mar 2008, 17:56

from another perspective, it just a certification process of so-and-so RAM works faster on my chipset after we take look at your DIMM and confirm. It is a pay-for-RAM-Chipset-certification scheme.

General consumer market segment is less willing (or will never) pay for harware validation like in workstation/server market. Hence, they had to repackage it and tie it with "Performance" plus acronym.

This is a good thing in general.

I am sure there will identical DIMMs without EPP/EPP2/XMP label that works as well. With identical modules, It is only time someone figure out the EPP2 and XMP tables and program the DIMM themselves with very little risk as long as within voltage spec.

Kipman725 · 24th Mar 2008, 21:03

whats up with the SPD chip?

Tim S · 25th Mar 2008, 10:04

EPP / XMP use the SPD chip... they use the spare space to provide additional settings including voltage options, etc (that are accessible via EPP/XMP). JEDEC only certifies a limited amount of SPD settings and these are not designed with performance in mind.

Basically, memory manufacturers have to set their SPD to a certain value, even if they claim the modules can hit higher speeds. With EPP/XMP, they can enable the rated speeds by changing just one option in the BIOS. The rest is taken care of.

24th Mar 2008, 15:50	#1
Tim S Pewlius Caesar bit-tech Staff Join Date: Nov 2001 Location: Ascot, Berks Posts: 18,021	DDR3 with both EPP 2.0 & XMP support "is possible" http://www.bit-tech.net/news/2008/03...ort_possible/1 DDR3 memory modules supporting both EPP 2.0 and XMP are technically possible, but it may not happen because of the branding nightmare. __________________ Tim on Twitter \| Tim's Blog \| Tim's Flickr The bit-tech Blog \| bit-tech on Twitter \| Join the bit-tech & Custom PC folding team (#35947)

24th Mar 2008, 17:56	#4
ryanjleng ... Join Date: Nov 2007 Posts: 323	from another perspective, it just a certification process of so-and-so RAM works faster on my chipset after we take look at your DIMM and confirm. It is a pay-for-RAM-Chipset-certification scheme. General consumer market segment is less willing (or will never) pay for harware validation like in workstation/server market. Hence, they had to repackage it and tie it with "Performance" plus acronym. This is a good thing in general. I am sure there will identical DIMMs without EPP/EPP2/XMP label that works as well. With identical modules, It is only time someone figure out the EPP2 and XMP tables and program the DIMM themselves with very little risk as long as within voltage spec. Last edited by ryanjleng; 24th Mar 2008 at 17:59. Reason: Too many Neutrinos went through my head and caused a cascading failure

24th Mar 2008, 21:03	#5
Kipman725 When did I get a custom title!?! Join Date: Nov 2004 Location: UK Posts: 1,753	whats up with the SPD chip? __________________ Sn45g game server mod My Electronics Site Hardware: 3400+ Sempr0n, 1GB RAM, 1.28TB local storage, x1950pro,Razer Viper,M$ comfort curve 2000,L70S + 17", Fujitsu 17" CRT Audio: HD-650's, PE congress amp, Sound Blaster AWE64, Soundblaster 24bit

25th Mar 2008, 10:04	#6
Tim S Pewlius Caesar bit-tech Staff Join Date: Nov 2001 Location: Ascot, Berks Posts: 18,021	EPP / XMP use the SPD chip... they use the spare space to provide additional settings including voltage options, etc (that are accessible via EPP/XMP). JEDEC only certifies a limited amount of SPD settings and these are not designed with performance in mind. Basically, memory manufacturers have to set their SPD to a certain value, even if they claim the modules can hit higher speeds. With EPP/XMP, they can enable the rated speeds by changing just one option in the BIOS. The rest is taken care of. __________________ Tim on Twitter \| Tim's Blog \| Tim's Flickr The bit-tech Blog \| bit-tech on Twitter \| Join the bit-tech & Custom PC folding team (#35947)