Desktop CPU in Laptop Performance

Hi,

I'm starting the process of getting a new laptop. I've used Desktop processors in mobile cases before (several years ago) but stopped when I had one fry itself in about 2 years. How do the Desktop CPU builds measure up these days ? And given that you're still limited to laptop GPUs (just due to power draw) , what kind of improvement do you actually get ?

For reference I'm looking at a fairly high end build (SLI / Crossfire with top end mobile GPUs) and one of the higher end CPUs (either mobile or desktop).

Thanks,

 

i guess the upcoming P870DM should fit your bill then: skylake desktop cpu / sli mxm GPUs up to 980M currently and 990M in the near future / DDR4 up to 64GB / USB3.1 / TB3 / etc.

 

Yeah, I was giving it serious though, which is why I wanted to know what sort of performance gains you get vs the best Laptop CPUs relatively to the tendency of Desktop CPUs in mobile cases to fry themselves.

 

Well there haven't been many reports of it yet because it's still very early on, but from what I understand the cooling in the Clevo's isn't that bad, but it does get hotter than mobile CPU's. In terms of lifespan that would be something of concern unless you are planning on buying a new CPU in a few years. Easiest thing to do is just regular maintenance on it, repaste and such.

 

If you are running programs that actually will push the CPU, then the desktop one is going to give you significantly better performance. But if you are using it for gaming, then you won't really notice any difference at least for a while. But if you have two specific processors in mind, if you do a search like "i7 5850 vs i7 4790k" for example, there are a lot of sites that will show a benchmark comparison between them.

But if you do go with a desktop processor one, keep an eye on temps and do cleaning / maintenance as Splintah said (good idea for any computer though really).

 

The Xeon in my P750ZM doesn't get any hotter than a mobile CPU.

 

I do some pretty heavy number crunching for optimization problems. Though I'll also use it as a gaming rig.

Judging from the way this thread is going though, it seems that there hasn't been any major issues with even high end Desktop CPUs overheating recently then in Clevo/Sager stuff ?

Guess I'll have to look into the sort of performance advantage and then weigh it up vs battery life then.

 

There have been individual cases of overheating. But it appears that they were mostly related to poor paste jobs in the ZM models.
Desktop CPUs in a laptop is not new to Clevo. The P570WM owner's lounge would be a good place to ask about recent performance history.
http://forum.notebookreview.com/thr...wm-p570wm3-sager-np9570-owners-lounge.707507/

 

It sems there has been a desktop CPU available in at least one model for a while and overheating has really not been a common issue.

 

...provided the user is prepared to do a little bit of tinkering/optimization, such as getting the paste job right, using high performance TIM, regularly cleaning the fans and heatsinks, propping up the back of the machine, using max. fan speed, etc.

if you just order a 4790K / 6700K inside a ZM/DM and expect it to work at stock clocks in high stress situations, better be ready for some thermal throttling just needs a lil bit of luv, then it purrs like a kitten even under heavy load

Sent from my Nexus 5 using Tapatalk

 

And speaking of this "lil bit of luv" where's the OCCT, POV-Ray new stress test guide? Xmedia Recode was a benchmark or actual encode? haven't googled that one yet.

 

How do you mean guide? Or more of a benchmark page for people to compare?

 

u mean this?

http://forum.notebookreview.com/threads/official-clevo-p75xzm-batman-sager-np9752-owner´s-lounge-welcome-to-the-batcave.767105/page-778#post-10069636

xmedia recode is a tool to encode video and audio its what im using on a regular basis...

still havent found the time to update the batcave OP yet, got a list with important posts ready though

 

I already got that one saved. That post combined with this one.
http://forum.notebookreview.com/threads/official-clevo-p75xzm-batman-sager-np9752-owner%C2%B4s-lounge-welcome-to-the-batcave.767105/page-771#post-10066106
Had to find it. Google to the rescue, site:forum.notebookreview.com/ jaybee83 occt There's tons of Prime95 discussion but zippy about these. The reasoning, methodology is as important as the results. Did you change POV-Ray, at all? The "standard benchmark switches" found in this link or it was ready to go?
http://www.povray.org/download/benchmark.php
I've downloaded them but haven't installed yet. Got to get my UV on. Only stress mine has seen is the tab whore club <3. Check that, the Mythlogic stressing too.

Yep, encoder. I wasn't sure if you were actually encoding or there was a Xmedia benchmark like x264.

 

aaah, thats what u mean nope, aside from playing around with the number of threads used by POVRay, i didnt change any settings! same with OCCT, just the settings that i described in the two posts

 

Running the XTU stress test with my Xeon E3 1271, I get temps in the low-mid 70s. This is with the stock paste job from Eurocom (they use IC Diamond).

The battery life on the ZM isn't just due to the impact of a 80-88w CPU - it doesn't support Optimus, so everything is rendered by the dedicated GPU. Battery life on these types of machines sucks, it's the price you pay for the hardware inside.

 

Yes GDDR5 is power hungry

 

with every network adapter switched off, cpu forced to 800mhz, core parking enabled to 100%, display brightness at minimum and gpu core and vram downclocked to the minimum stable i can barely eke out 3 hours of battery life

Sent from my Nexus 5 using Tapatalk

 

Still a lot better than the P570WM got, but then again that had a server chipset