Precision 7550 & 7750 Owners' Thread

Don't have the list of parts, but ...
I think that the DGFF data connectors are compatible between all Precision systems with DGFF.
The cards themselves and the heatsink are not. (Though there is a pretty good chance that 7560 cards will work in the 7550.)
You'll also need a DGFF power cable which would also be a part specific to this system.

 

Best RAM for the Dell Precision 7750? I'm looking for the RAM with the highest frequency and lowest latency (2x16 GB). Here are some options that I found:

https://www.amazon.com/Crucial-Ballistix-Laptop-Gaming-BL2K16G32C16S4B/dp/B083W5ZRJ1 ***This is the RAM that I'm unsure will work in the Precision because some people have said that it runs at a very low frequency without XMP in BIOS. So does the 7750 have XMP in BIOS, and if so, would that RAM work with XMP?
https://www.amazon.com/Crucial-16GB-Laptop-Memory-CT16G4SFRA32A/dp/B08C511GQH ***This is the RAM that I'm 99.999% sure will work in the 7750. However, it has CL22 which isn't super good.

Does anybody more qualified than me have any thoughts on the options and what will work in the 7750?
Any help would be greatly appreciated

Edit: I'm also confused what double rank RAM means and whether it is actually beneficial.

 

Precisions have no XMP: that's a solidly 'gaming' feature, and these notebooks are as far from 'gaming' as one can get, despite having a lot of performance

Get the JEDEC RAM: it's slower, but I doubt you'd notice the speed difference much, as Intel CPUs aren't as constrained by RAM as AMD Ryzens are.

 

Uh...

I'm pretty sure mine does. Came from Dell with these...

PART NUMBER DESCRIPTION
CCT36 DIMM,16G,3200,2RX8,DDR4,XMP,NE

From CPU-Z,



Isn't it running at "XMP-3200" or am I reading it wrong, which is entirely possible?

FYI: This is a Precision 7550 with i9-10885H.

There were no settings to change anything in the BIOS, maybe that is what was meant?

Homer

P.S. Don't tell my game library they shouldn't be running on this. We are playing through Mass Effect Legendary Edition and it does a passable job at Cyberpunk 2077 at 1440p via the external dock.

 

DDR4-2933 and DDR4-3200 are JEDEC standards (see table on right). XMP doesn't just refer to frequency, but the latency timings, too. The link posted by @zhongze12345 to the Crucial Ballistix modules are solidly XMP, and a good 6 cycles faster than the JEDEC standard. JEDEC only went up to 2666 MHz until later in 2018/19 when 2933 and 3200 MHz standards were added.

Your memory is running at 3200 MHz, but it is not, strictly speaking, XMP (look at your CAS/CL timings: they are 21-21-21). CPU-Z might have wrong labelling.

I meant from a marketing and typical use-case perspective. I game on my 7530 too, and I upgraded my GPU precisely to get better framerates in games

 

Hmm,

Intel seems to call it XMP, or is it just marketing? Maybe, XMP-ish? I feel like any memory running above the CPUs rated max memory clock speed is XMP to Intel. (2933 v 3200)

On the gaming thing... I agree, gamers probably aren't buying a $5K + laptop. On the other hand, this seems to be one of the few platforms left in the laptop space that will, in theory anyway, let you upgrade the video card.

Homer

 

Hi everyone!

Giving an update regarding the hangs and freezes of the Precision 7750 using the DockStation WD19DC, I found EXACTLY how to avoid it in Windows 10
If you have the "Discrete graphics output..." in the BIOS, and you have any HDMI or DisplayPort cable connected to the laptop, directly or through the dockstation, you MUST have active the external video output (as external, duplicate, whatever, it doesn't matter), no matter what, even if you don't have the monitor powered on.

If for any reason you deactivate the video output, the freezes will come back to hunt you down
The only way to be able to deactivate the external video output and not have hangs or freezes, you have to disconnect the HDMI and displayport cables from your laptop/dockstation.

That's it! It's a weird solution, but it works.

Anyway, In some other regards, I'm looking for the best option on a budget of 2 TB disk for my Precision 7750.
Do you have any recommendations?

I also have a doubt, about the max capacity per slot that this laptop actually supports. In the manual, it says up to 2 TB, but I wanted to know if anyone has tried to install a larger nvme disk to this beast of a machine.

Thanks for your help with this!

 

4TB is confirmed to work; probably, it will support any capacity, the manual says 2TB just because that's the most that Dell was offering at the time the system was released.

 

Ope. New stuff.

USB dropouts. Seemingly only when connected to my WD19DC. Most easily noticeable when my WWAN card drops out and needs to be reconnected, but when it happens, it usually takes out other things, including my microphone, which will need to be unplug/replugged, as well as a video capture device. Even takes out the keyboard on a rare occasion, though typically just ends up with duplicate keystrokes. Have removed the WWAN card as a diagnostic step but it still drops.

The dock's been replaced under warranty because the fan failed, but this USB thing persists. Any ideas?

 

Go to BIOS and disable CPU "C-states".