Quote from kevinqc:
WinstonTJ
Thank you for all those links.
I did some research on T5500 & T7500.
Yes, both have 4 & 5 PCIe x16 slots respectively.
Do you know why only 2 have locking system & others don't ?
How does Xeon E5606 2.13GHz compare to i7 2600k ?
T 5500 has only one processor ?
Is 8 GB ECC RAM enough ?
It says the PSU is 875 Watts. I guess that should be enough for 3 FirePros each taking max of 20W only.
I hate how they don't let you see even the last post when you go to reply to a thread on this forum.
IDK - It's like that across Dell's line - I believe that the x16 slots that have the extra power capacity (like x16 up to 75W in the pic I posted earlier) are always the ones to have tabs while the others don't. Once you put the cards in they shouldn't be falling out - with or without a tab. To be honest they are kindof a pain the way they are located - if you have multiple cards in there its difficult to get your fingers in to flip the tab & pull the card. (also remember Dell makes millions of PCs so if they can save a buck here & there it goes a long way)
T5500 has a funky setup - Personally I don't have any problem with it (performance wise) but most hard-core computer guys really rip on Dell (or hate on Dell) for the design. There is an add-in CPU socket for the motherboard.
See the two white squares (one is by the pink parallel port)
there is an additional CPU riser board (or daughter board) with its own memory controller, CPU controller, 3 DIMMS, etc. (below)
The two fit together and then you can add in a 2nd CPU - its a bit funky but it works.
To be honest I think putting a CPU like that in a machine like that is a total waste. I think you would be better off with a quad-core i7 with hyper thread technology. 2.13ghz quad without HT is going to be pretty slow.
Do a completed listings search on eBay for a "dell precision t5500" or for a "dell precision t7500" and you'll get an idea for what these things are really worth. My advice would be to contact the seller and make sure it is under warranty and eligible for a full ownership transfer to you.
If you look at a T5500 vs. T7500 you'll see the T7500's are much more expensive - but then go look at a T5400 vs. T7400 and you'll see that you can't get rid of the T7400's. They are HUGE and heavy and in 3-4 years no one will want them.
You said you have all your own parts right?
http://www.ebay.com/itm/Dell-Precis...Desktop_PCs&hash=item45fdf13f50#ht_5758wt_720
^^ Barebones on the cheap that's most probably still under warranty
http://www.ebay.com/itm/Dell-Precis...Desktop_PCs&hash=item336d66016f#ht_5759wt_720
Same Seller + this one has 2nd CPU riser. Probably better to give a low-ball offer on the one with the riser.
Also look for some of Intel's "Confidential" engineering samples like this:
http://www.ebay.com/itm/Intel-Quad-...7108?pt=CPUs&hash=item4160102d24#ht_817wt_882
It'll help you save a ton of money - although that specific CPU is only 3.07ghz not 3.2ghz like a true W5580 CPU.
http://www.ebay.com/itm/Intel-Xeon-...541?pt=CPUs&hash=item3cbeddb4cd#ht_1713wt_691
^^^ That looks like a legit sale (true Xeon W5580).
For $600 (delivered) you could buy that barebones T5500 with the 2nd CPU riser... for another $600 you can buy 2x W5580 CPUs (that's 16 cores @ 3.2ghz) and you'll have a matching system to what I'm typing to you on right now

(and probably one of the fastest & most overkill systems on ET).
FWIW, I paid over $1,300/each for those CPUs not 20 months ago. My Dell T5500's were $4,500 each new and now you can pick up the same thing for ~$1,500 all up.
If you buy these things, message the seller and MAKE SURE that you ask him/her if they can sell you a matching pair of CPUs with an identical STEP CODE. They only pair if they match.
http://www.ebay.com/itm/Intel-Quad-...887?pt=CPUs&hash=item4160102477#ht_1028wt_882
^^ Take a look at that CPU, its an intel confidential and see in the picture how it says "QGXP", you need to make sure you have two of the same step codes.
Also, for reference, the QGXP "confidential" CPUs are NOT W5580 CPUs, they run at 3.07ghz (but speedboost goes higher, sometimes as high as 3.59ghz) whereas the W5580 is 3.20ghz and 3.46 on speedboost.
They also show up in device manager differently:
Here you can see the difference in how they show up - Personally I think the confidential CPUs are fine - you can pick them up for $200-$350/each vs. a real W5580 is going to run you closer to $800 each...
Too much typing, need to head out for a while but that's what I'd recommend. eBay that Barebones T5500 for $500 shipped (offer best offer of like $450 shipped and go from there) and then pick up a pair of those intel confidential CPUs and buy 6x 1GB ECC RAM and 3x 2GB ECC RAM and you'll be good to go for $1200 or so.