Dell Workstation Owners Club

[Mafiatounes]

For the GPU limitation i don't think there is a limitation i now have a RTX 2080ti with 8pin to 2x8pin my psu is a 1300w and the gpu pulls approximatly 265w in total according to hwinfo.

I am not sure if a lower psu model would have limits, my current config is not the standard since most have the 685/825w psu. I had the 685w stock but did not ran the 2080ti with it.

Can't help with the bios, still need to get to it while waiting on a programmer.

Welcome to TPU and happy holidays

 

[sk111]

1) https://www.techpowerup.com/forums/threads/throttlestop-overclocking-desktop-pcs.235975/page-63 - if you overclock a 16xx v3 (eg 1650v3 1660v3) you can use scewin and xtu script at startup (this will not work on v4 cpus eg 1650v4 etc (no need for Throttlestop) this will not work on 26xxx v3 CPUs. For TBU (turbo boost unlock) you need the external programmer and that will work on 26xxx v3 processors (2697v3, 2699v3 etc) and not on V4 CPUs or 16xx v3/v4. The best performance is go overclock on a 16xx v3 CPU as better gains for gaming if that is the objective (have a look in the thread above on how to do this). The TBU which is applied in the series 26xxx v3 is not as powerful in gaming as the cpus are bound by TDP limitations on that hack and need to either remove hypethreading in bios or even disable some cores to increase single core frequency (but still single core performance will be well below the overclocking on 16xx v3 hence the performance issue in gaming). In that case you dont need XTU or Throttlestop as it is a different operation. Also to note with that hack the sleep is disabled (or if you use it will crash shortly after) - something that is not happening if you go the overclock method on 16xx v3.

2) I have a rtx 3080 that can draw around 350Watts (OCed) on an 825Watt power supply - for such a power you need 1 8pin coming from the Power_VGA1 in your distribution board and 1 coming from the CPU2. If the power supply is 685 it doesnt split the rails of CPU2 and Power_VGA1 which now are on the same rail and you cannot power such a high spec GPU. In the 685 Watt power supply the max you can get is 18Ampsx12V=216 Watts + the 75 Watt from the power of the PCIE slot= 291watt (you can either do that with a single cable from the Power_VGA1 that has 2x8pins (or 8+6) or 1 from Power_VGA1 and 1 from Power_CPU2 but it is the same rail either way). So if your card is well below that limit (eg lower spec card or significant undervolt in the 3080) you should be fine in theory (in practice the leeway need to be more as the gpu could have power spikes and may not work properly).

 

[stefan0815]

Thanks for the welcome!

My 2. question was written very late in the evening.
There are several mod Bios versions around this forum. Most information i got was from miyconst (@masterdeejay ?), who did also a few very intersting youtube videos.
My Idea is to buy a cheap V3 CPU and let it run in moded allcore boost most of the time. What i did not understand is, how the overclocking mechanism is on the T5810.
@sk111 i think i will start with software and then flash (with programmer) later.

I know that i am a little bit late, since the V3 were a hot thing a few years ago. Thanks for the links to the right places!

To the Powersupply:

I started years ago with a 3600 with a 425W Powersupply. I put REG ECC Memory in and couldn't believe my eyes, since dell blocked ECC REG Memory with the low Power supplys (nice message on screen).
You had to use a 600w supply to get at least ECC working. So i compared the 635W supply with a 425W one and moded the Power supply PCB in a way that it can also run ECC REG Memory. I am sorry that i forgot the exact details. Since today those powersupplys are very cheap, noone will go this way ;-).

What you can do on the regular T3600 Board (might be simmilar in T5810) is, that you connect one or both CPU Power Rails to the GPU ones. I got the Fury X flawlessly working with the 425W Supply.
The 425W and 635W Powersupply is internal single rail Supply. As long as you don't short the rails, it should be fine (I think the 18A is to prevent burning a single 12V cable).

@sk111 the power Board you have shown is a T5600 Board ?
It is much nicer to use this one with a proper molex connector to adapt CPU Power to GPU Power but it also needs some time to build proper cables and find this PCB as a replacement Part quite cheap.

 

[sk111]

Thanks for the welcome!

My 2. question was written very late in the evening.
There are several mod Bios versions around this forum. Most information i got was from miyconst (@masterdeejay ?), who did also a few very intersting youtube videos.
My Idea is to buy a cheap V3 CPU and let it run in moded allcore boost most of the time. What i did not understand is, how the overclocking mechanism is on the T5810.
@sk111 i think i will start with software and then flash (with programmer) later.

I know that i am a little bit late, since the V3 were a hot thing a few years ago. Thanks for the links to the right places!

To the Powersupply:

I started years ago with a 3600 with a 425W Powersupply. I put REG ECC Memory in and couldn't believe my eyes, since dell blocked ECC REG Memory with the low Power supplys (nice message on screen).
You had to use a 600w supply to get at least ECC working. So i compared the 635W supply with a 425W one and moded the Power supply PCB in a way that it can also run ECC REG Memory. I am sorry that i forgot the exact details. Since today those powersupplys are very cheap, noone will go this way ;-).

What you can do on the regular T3600 Board (might be simmilar in T5810) is, that you connect one or both CPU Power Rails to the GPU ones. I got the Fury X flawlessly working with the 425W Supply.
The 425W and 635W Powersupply is internal single rail Supply. As long as you don't short the rails, it should be fine (I think the 18A is to prevent burning a single 12V cable).

@sk111 the power Board you have shown is a T5600 Board ?
It is much nicer to use this one with a proper molex connector to adapt CPU Power to GPU Power but it also needs some time to build proper cables and find this PCB as a replacement Part quite cheap.

All the things I mention are based on T5810 - no idea on what is applicable on other Dells.

 

[stefan0815]

I think that T3600 is simmilar, when my 5810 arrived can give some feedback.

Now i am thinking about the CPU choice, i don't whant to spend more than 10€ so the following are on my list:

E5-2687W V3
E5-2690 V3
a little bit over buget (16€) is the:
E5-2697 v3

I think the 2690V3 would be the best choice for the price?

 

[sk111]

I think that T3600 is simmilar, when my 5810 arrived can give some feedback.

Now i am thinking about the CPU choice, i don't whant to spend more than 10€ so the following are on my list:

E5-2687W V3
E5-2690 V3
a little bit over buget (16€) is the:
E5-2697 v3

I think the 2690V3 would be the best choice for the price?

1660 v3 OC is the best option. I got it for 15 or so. I wouldnt be bothered with the 26xx but whatever floats your boat. The 1660 v3 is in effect the xeon version of i7-5960X which can be overclocked.

Intel Core i7-5960X Specs

Haswell-E, 8 Cores, 16 Threads, 3 GHz, 140 W

www.techpowerup.com

 

[stefan0815]

In the Moment there are no cheap 1660v3 available and the 1650v3 with only 6cores seems to be overpriced too. It's said that the 1620v3 does not have an unlocked Multiplier.

 

[sk111]

In the Moment there are no cheap 1660v3 available and the 1650v3 with only 6cores seems to be overpriced too. It's said that the 1620v3 does not have an unlocked Multiplier.

I got them from Aliexpress including delivery. 1650v3 is like 7. But depends whether they can post to your location.