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Dell ripoff or not? 955X chipset, 800 MHz FSB, what RAM???

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November 14, 2005 6:07:26 PM

Hi all:

I've bought a new Dell Workstation 380 with a Pentium D 830, 3 GHz/800 MHz FSB, and 1 GB of DDR2-667 (5400) RAM.

My understanding is that the right RAM for an 800 MHz FSB is DDR2-400, but the 955X chipset doesn't even support that

What gives? Why sell a mismatched CPU/chipset/RAM? Is there any benefit to DDR2-667 with this chipset/CPU combo, or is Dell just upselling more expensive RAM to dummies like me???

Also, Intel doesn't say it, but does the 955X support DDR2-800?

Thanks!
November 14, 2005 7:44:29 PM

Huh? I'm almost certain (having never used one myself...) that it can support DDR2-400. I'm making an assumption here, but I think the mobo can run DDR2-800, but it may not be able to run it at full speed - it may end up running it at 667. (just like using PC3200 in a PC2100 mobo) They may come out with an update to properly support it...

The latency of DDR2 is higher than DDR1, so having the faster ram helps overcome the latency delays (3 ticks of latency at DDR667 = <2 ticks of latency at DDR400).

So, the faster memory is going to perform better.

Mike.
November 14, 2005 11:27:29 PM

I doubt that the ram is going to be your problem. You really should have come before you bought.
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November 17, 2005 5:47:05 PM

The RAM is fine that's a normal setup, its not mismatched, and Dell isn't upselling. Google some info on DDR2 RAM.
November 22, 2005 10:45:55 PM

I know they have small amount of O/Cing on the XPS line so thats why they'd have the 667 on those but i'm not sure why they are putting 667 in non-o/cing 533fsb mobo's. Better upgrade path i guess.....
November 22, 2005 11:37:35 PM

Quote:
Huh? I'm almost certain (having never used one myself...) that it can support DDR2-400. I'm making an assumption here, but I think the mobo can run DDR2-800, but it may not be able to run it at full speed - it may end up running it at 667. (just like using PC3200 in a PC2100 mobo) They may come out with an update to properly support it...

The latency of DDR2 is higher than DDR1, so having the faster ram helps overcome the latency delays (3 ticks of latency at DDR667 = <2 ticks of latency at DDR400).

So, the faster memory is going to perform better.

Mike.

agree!!!!!!!!
March 10, 2012 6:22:12 AM

spman_1 said:
Quote:
Huh? I'm almost certain (having never used one myself...) that it can support DDR2-400. I'm making an assumption here, but I think the mobo can run DDR2-800, but it may not be able to run it at full speed - it may end up running it at 667. (just like using PC3200 in a PC2100 mobo) They may come out with an update to properly support it...

The latency of DDR2 is higher than DDR1, so having the faster ram helps overcome the latency delays (3 ticks of latency at DDR667 = <2 ticks of latency at DDR400).

So, the faster memory is going to perform better.

Mike.

agree!!!!!!!!


100%right. i have one(380) and i use a elpida 800mhz 2x2gb ram kit.sadpart.. it runs it at 667mhz and no update from dell to run 800 mhz
a b à CPUs
March 10, 2012 9:47:21 AM

aravind4297 said:
100%right. i have one(380) and i use a elpida 800mhz 2x2gb ram kit.sadpart.. it runs it at 667mhz and no update from dell to run 800 mhz


the year is 2012....this post is 7 years old for crying out loud!!!! his comp must be dead and sitting under layers of dust by now!!!
March 10, 2012 4:10:23 PM

Lol ara desrves another thumbs down for bringing back A thread that is 7 years old.
March 17, 2012 8:06:31 AM

actually.. it is dead.
BTW, my current rig:
i7 2600k@3.73 GHz
Corsair H80 HPLC
G-skill Ripjaws X 8 GB DDR3 2133 RAM ( i know.. overkill AND latency is too high.tired of the same comments 'bout it every time. :??:  :??:  )
GTX 570@ 790/4000/1464
Benq XL 2410T
etc...

March 17, 2012 8:12:10 AM

that was my Oooooooooooooold rig. in fact, i purchased a c2q after that and then up'd to a SB in 2010. waiting for ivy bridge....(???worth it???)
March 17, 2012 8:14:01 AM

someone close this thread already..









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