Dell Workstation Owners Club

[Marstg]

For like 3 weeks I am the owner of a Precision T5810 workstation with a Xeon E5-1650v3 16GB DDR4 and a GTX 750 Ti for 90 USD. The GPU was defective so I got a 30 USD rebate. A very good deal IMHO. I got a 2070 Super and started folding. I tested booting from nvme and it works fine but it needs to be in uefi mode. However trying to install Ubuntu LTS 22.04 was a fail as it looked like my mouse failed, a Logitech M325 on a Unify controller.

 

[frigider]

Can you tell what you have in your adapter?

Yup. A lot of PSU's and adapter cable makers use it. Dell doesn't doesn't use steel wiring in their PSUs, but that adapter @frigider bought might.

It's a PITB to do soldering work with. If you can avoid it, do!

damn, didn't imagine steel right there

i cannot avoid it at least for now.
but what is the actual risk? what can go wrong?

this is the packaging, it does not say anything about the wiring.

i found 2x sata to 8 pin - should i opt for those?

both are dirt cheap 3-4 $

found in amazon for 6$ 2 x 6 pin to 1 x 8 pin.

but again - no mention of the conductor material.

thanks for the input!

*checked the QR code: AWG is 18 .. is that good? bad? terrible?
tech drawing , declaration of conformity but none of them mention the conductor material.
kind of sad :|

 

[lexluthermiester]

AWG is 18 .. is that good?

Yup! Even if it's steel wiring, 18 gauge wire over 6 conductor lines(which is what the adapter starts out with) will handle about 540w safely. You're not going to get anywhere close to that. You're good.

 

[SamirD]

Delock makes good stuff and is like startech in the usa--a trustable brand with specialty cables like that.

Another good company is moddiy.

 

[frigider]

good to hear that guys.
will push it to the maxXx now

*on my way to the second T7810.
this one will have V3 CPUs cause they are faster(this is what the WWW says) and cheaper than the V4 alternative.

i hope that in my comparison"benchmars" - real life test cases that matter to me they will outperform the V4.

there's gonna be WAR: 2697 V3s vs 2680 v4s

 

[SamirD]

good to hear that guys.
will push it to the maxXx now

*on my way to the second T7810.
this one will have V3 CPUs cause they are faster(this is what the WWW says) and cheaper than the V4 alternative.

i hope that in my comparison"benchmars" - real life test cases that matter to me they will outperform the V4.

there's gonna be WAR: 2697 V3s vs 2680 v4s

Passmark agrees with you on the v3 being faster, but barely. You'll hardly notice in real life. Now, what may be noticed is that the v3 uses about 25w more power.

It's always interesting to see different generations of processors and see what was optimized--one era was cores, another was ipc, another was power, and it goes on and on.

 

[frigider]

yeah i read that V4 update only reduced the 'die size' with no major perf upgrade.
so for 2x 25w extra i kind of said to myself "f#ck this' and went with V3.

but V4s have TSX-NX (don't know if i got the name right) instruction set so i will see if "that" makes a differencein my case.

hoping it does not

 

[Count von Schwalbe]

yeah i read that V4 update only reduced the 'die size' with no major perf upgrade.
so for 2x 25w extra i kind of said to myself "f#ck this' and went with V3.

but V4s have TSX-NX (don't know if i got the name right) instruction set so i will see if "that" makes a differencein my case.

hoping it does not

Transactional Synchronization Extensions (TSX) instructions set

TSX allow the processor to determine whether threads need to serialize through lock-protected critical sections, and to perform serialization only when required.

linasm.sourceforge.net

For what TSX instruction set means. I don't understand that deep into it but it may help those smarter than me...

 

[frigider]

Transactional Synchronization Extensions (TSX) instructions set

TSX allow the processor to determine whether threads need to serialize through lock-protected critical sections, and to perform serialization only when required.

linasm.sourceforge.net

For what TSX instruction set means. I don't understand that deep into it but it may help those smarter than me...

yeah... i'm not getting much out if this explanation either, cannot compute the info.

but as i said - i ran some real life tests/benches on V4s and now i will see how V3s stand for the software i use.

will try one more time on YT to search for a simpler explanation.
then again - what matters most if your software will benefit from it, which thankfully i can observe and draw conclusions.

 

[frigider]

another question guys - i take it the stock T7810 CPU heatsinks+coolers can handle all V3 and V4 CPUs?

thinking about the E5-2687W v3 with their 160W TDP - sounds kind of scary.

with 825W PSU and 150W taken by the GPU ... and 320 W by the CPUs - all is well, right?

 

[SamirD]

another question guys - i take it the stock T7810 CPU heatsinks+coolers can handle all V3 and V4 CPUs?

thinking about the E5-2687W v3 with their 160W TDP - sounds kind of scary.

with 825W PSU and 150W taken by the GPU ... and 320 W by the CPUs - all is well, right?

It depends on if Dell had more than one heatsink available. If they did, you may need the higher tdp one or you'll hear the fans ramp up to 100% and maybe overheat. (I've generally been able to ramp fans to 100% and put in 95w processors under 65w stock heatsinks, but this didn't work on the 4790k in a 3020 SFF where I had to get the upgraded HSF and shroud.)

As far as power, the power supplies are rated more like at a minimum and you'll have to tax the system 100% on all fronts--gpu and both cpus for you to hit the 470w draw--and that still leaves 355w if at 100% efficiency or probably the same if the power supply can do a bit more than 825w.

(In an older Dell Optiplex 330 with a 380 motherboard, I've got it loaded up with max ram, a gpu on the pcie (no additional power), a 95w processor all on the stock 200w-something power supply. And it's been running like this for years in 90F. Yes, the power supply is pretty hot, but I'm not taxing it at 100% so it seems to still get by. Just some food for thought.)

 

[lexluthermiester]

another question guys - i take it the stock T7810 CPU heatsinks+coolers can handle all V3 and V4 CPUs?

Do you have a photo? Dell made more than one model of heatsink for that line of workstations.

 

[frigider]

Do you have a photo? Dell made more than one model of heatsink for that line of workstations.

yes Sir i do:

i had a t7810 before and these cooling units looked the same, from the outside at least.


i think i just had a revelation:

i bought (again) 2x14 core CPUs with base 2.6 and 3.1 turbo on all cores. 2697 v3.

and kind of thought if maybe i should have went for lower no of cores and higher clock speed.
but the thing is : in BIOS you can limit the no. of cores.

sooooo i am thinking maybe i can cut down some cores and maybe see a All core turbo increase

as I can see - turbo decreases with core count:
Frequency 2600 MHz
Maximum turbo frequency 3300 MHz (1 or 2 cores)
3200 MHz (3 or 4 cores)
3100 MHz (5 or 6 cores)
3000 MHz (7 or 8 cores)

i will make some tests.
curious how high the turbo will get with fewer cores.

*but i need to wait 2 weeks until the CPUs actually arrive. :|

so i will have some flexibility and be able to test which is better - original config or smaller no of cores and higher clocks.

**tested with 4 core cpus, turbo did increase

 

[lexluthermiester]

yes Sir i do:
View attachment 257039

i had a t7810 before and these cooling units looked the same, from the outside at least.


i think i just had a revelation:

i bought (again) 2x14 core CPUs with base 2.6 and 3.1 turbo on all cores. 2697 v3.

and kind of thought if maybe i should have went for lower no of cores and higher clock speed.
but the thing is : in BIOS you can limit the no. of cores.

sooooo i am thinking maybe i can cut down some cores and maybe see a All core turbo increase

as I can see - turbo decreases with core count:
Frequency 2600 MHz
Maximum turbo frequency 3300 MHz (1 or 2 cores)
3200 MHz (3 or 4 cores)
3100 MHz (5 or 6 cores)
3000 MHz (7 or 8 cores)

i will make some tests.
curious how high the turbo will get with fewer cores.

*but i need to wait 2 weeks until the CPUs actually arrive. :|

so i will have some flexibility and be able to test which is better - original config or smaller no of cores and higher clocks.

**tested with 4 core cpus, turbo did increase

Yup, those will be good for the CPU's you're considering.

 

[frigider]

Yup, those will be good for the CPU's you're considering.

yeeeee-haaaaa
soon.

 

[lexluthermiester]

yeeeee-haaaaa
soon.

Make sure to use a good TIM for optimal heat transfer. With MX-5 being discontinued, my current fav is KPx. However there are many to choose from that would be excellent performers. Do you have a good thermal paste?

 

[frigider]

Make sure to use a good TIM for optimal heat transfer. With MX-5 being discontinued, my current fav is KPx. However there are many to choose from that would be excellent performers. Do you have a good thermal paste?

i got MX-2
i guess mx-5 si better

 

[lexluthermiester]

i got MX-2
i guess mx-5 si better

MX-2 is solid. You're good to go.

 

[frigider]

.

 

[lexluthermiester]

.

?!? What's up?

 

[frigider]

?!? What's up?

trying to find Precision rubber feet.
and i manag to find Optiplex ones..

the unit i got is missing 5 rubber feet
all 4 on the bottom and 1 on the side. :|

but i think i will just buy rubber band the has self adhesive or something..

 

[SamirD]

trying to find Precision rubber feet.
and i manag to find Optiplex ones..

the unit i got is missing 5 rubber feet
all 4 on the bottom and 1 on the side. :|

but i think i will just buy rubber band the has self adhesive or something..

Check out digikey and mouser as they will have all the different type of rubber feet that the manufacturers use.

 

[frigider]

Check out digikey and mouser as they will have all the different type of rubber feet that the manufacturers use.

are these forum users or ebay sellers?

 

[Count von Schwalbe]

are these forum users or ebay sellers?

Digikey:

the company is the fourth largest electronic component distributor in North America and the fifth largest electronic component distributor in the world.

Mouser:

Mouser is ranked as the seventh largest electronic component distributor in the world. The company has 27 locations globally and more than 3,200 employees.

So Digikey is definitely an eBay seller, and Mouser is the forum user...

 

[SamirD]

You guys are hilarious!