Results 1 to 6 of 6
-
12-11-2008, 04:11 PM #1Web Hosting Master
- Join Date
- Aug 2005
- Location
- New Jersey
- Posts
- 598
FBDIMM versus ECC Registered DDR2
How significant are the differences between FBDIMM and ECC Registered DDR2?
I've read that FBDIMM uses more power and adds latency to memory requests but had the benefits of being faster and more reliable. Supposedly the advanced memory buffer on FBDIMM modules also offloads error correction from the processor and/or memory controller.
Are the benefits of using FBDIMM worth the additional cost?
Power usage seems to be most often mentioned about FBDIMM... is the additional power usage very significant?
__________________
...john2k...
-
12-11-2008, 09:55 PM #2Web Hosting Master
- Join Date
- Aug 2003
- Location
- /dev/null
- Posts
- 2,132
All I can say is that when you use Intel 5000 series processors and chipsets, you are forced to use FBDIMM because they don't support any other kind of memory.
Maybe FBDIMM on the 3000 series was placed to keep some kind of compatibility/chooseability between regular DDR2 ECC and the 5000 series, so in case of an upgrade you'd need not to put everything to trash?
__________________
Rafael Cresci <sysop@iptelligent.com>
IPTelligent - System Operator
-
12-11-2008, 11:31 PM #3Web Hosting Master
- Join Date
- Oct 2002
- Location
- Vancouver, B.C.
- Posts
- 2,699
Quote:
Originally Posted by iptelligent
All I can say is that when you use Intel 5000 series processors and chipsets, you are forced to use FBDIMM because they don't support any other kind of memory.
That's incorrect. The 5000 and 5400 chipsets may require FB-DIMM, but the 5100 chipset uses DDR2, which can be used with any 5000 series CPU's.
__________________
Han Hwei WooAstute Hosting Incorporated *Making technology work for you!*100% Uptime Dedicated Hosting in Vancouver, CanadaNeed a custom solution? E-mail sales@astutehosting.com
-
12-11-2008, 11:37 PM #4Web Hosting Master
- Join Date
- May 2001
- Location
- HK
- Posts
- 3,082
Quote:
Originally Posted by hhw
That's incorrect. The 5000 and 5400 chipsets may require FB-DIMM, but the 5100 chipset uses DDR2, which can be used with any 5000 series CPU's.
That's right. Take a look at m/b supporting xeon with ddr2http://www.tyan.com/product_board_li...hipsetid=99999
__________________
Proudly hosting your creativities!Yupapa Web Services Rental Server!!TEAMagic Web Services Web Site Hosting
-
12-12-2008, 03:07 AM #5Web Hosting Master
- Join Date
- Dec 2004
- Posts
- 790
Well fbdimm uses about 12w per module, but registered ddr2 w/ecc seems to use about 2w per module. When you have 8-16 modules, it really adds up. Not to mention that fbdimm is also 2x the cost.
FBDimm does appear to be a bit faster in benchmarks though. If that's worth something to you
-
12-12-2008, 07:03 AM #6Web Hosting Master
- Join Date
- Aug 2005
- Location
- New Jersey
- Posts
- 598
Quote:
Originally Posted by lostmind
Well fbdimm uses about 12w per module, but registered ddr2 w/ecc seems to use about 2w per module.
Exactly what I was hoping to find out. 10w savings per module is fairly significant. I ended up going with ecc/reg DDR2, 6 modules. 60w savings is pretty good and I suppose it will result in less heat generated in the case as well.
__________________
...john2k...