I tried calling to order memory + risers for the Precision T7400, but the phone tech seemed unable to provide the correct part # for the memory riser cards for the T7400. After he put me on hold to talk to tech support, he said the part # was TY853 which seem to be old poweredge server riser cards and he said they were only "refurb" available. I have a hard time believeing this is the correct part number since the T7400 is a current model high performance workstation and I doubt that the highest performance workstation that Dell makes would require a riser card that is currently discontinued and only availble in refurbished parts.
This machine requires the memory risers to reach above 64GB of memory.
Please help if you have this part #, I cannot find it anywhere. From the manual it looks like a set of 4 risers, with 4 slots per riser. I am not sure if it is a kit or if you have to buy each riser seperately.
To follow-up, I have found that the similar Precision 690 uses parts JF806/JF807 as riser pair that looks like it would work in the T7400. Can someone confirm if these are the correct part #s for memory risers for Precision T7400:
Bump. Anyone? Chris? This is preventing me from ordering about $4,000 worth of memory from Dell.
I find these part numbers for the T7400 -
F817F Memory RiserG327F Memory Riser
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Thank you Chris, I appreciate the help!
Will a memory riser from a 690 work in a T7400?
I'm also looking for a User Manual for Precision T7400. If anyone has it in PDF and could send it to me, would greatly appreciate it. Thanks.
Did you successfully install the risers? I'm thinking of doing the same but I remember when I bought the machine, the Dell site said that a retrofit was not possible.
I am interested in using one of these as well. From what I can tell, all of the parts mentioned above are also for the 690.
If I install one of these, will it run all the memory at 667MHz instead of 800?
"Will a memory riser from a 690 work in a T7400?"
Machine name: Dell Precision WorkStation T7400
Chipset: Intel 5400 Chipset
Machine name: Dell Precision WorkStation 690
Chipset: Intel 5100 Chipset
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OK thanks for the firm answer :)
What is the correct part number for the T7400 riser card? In my searches, all of the parts mentioned above say they are for a 690.
The riser power cables are attached to the large P24 connector from the power supply, using a CN-0CR388 cable which splits it into another two memory riser connector cables. Also, the 7400 riser version has a different memory fan assembly. Its not a simple just plug in risers and use it install.
DELL CR388 ASSY,CBL,PWR,MEM,PWS,T7400
DELL Assembly,Shroud,Riser,Dozer T7400 YR128
T7400 Memory Riser Board F817FT7400 Memory Riser Board G327F
Dell Precision WorkStation T7400 (DDR2-667MHz) Memory
Machine name: Dell Precision WorkStation T7400CPU options: Intel XeonChipset: Intel 5400 ChipsetMemory Speed options: PC2-5300 DDR2-667 240pin Fully Buffered SDRAM DIMM
notes: FB-DIMM Memory Risers are installed in the first four standard
memory sockets only. Additional standard memory sockets then become
Dell 690 Workstation Riser Part #: JF806 / JF807
SpeedStep: Cool, thanks for the info.
Does the memory on this riser run at 667 mhz instead of the 800 that the on-board memory sockets support? It's only a few percent in speed though, not a big deal, but I can save a few bucks loading up on 667 instead of 800 :)
Yeah, all the searches I found show F817F and G327F as being a riser for the PWS 690. Very confusing! So it sounds like the 2 riser cards are the same but all the other components are different, right?
Since there are glitches and delays with more connectors and risers etc Imho I would go for the fastest ram.
Either way DO NOT MIX SPEEDS. You will be sorry if you do.