Dell Latitude E5570

Yeah, that's true. Don't know how i didn't notice. I was so focused on reinstalling windows and all that, and maybe i'm used that a new system doesn't have the right drivers out of the box, i didn't see it.
Also, the buzzing problem is solved by disabling C states as said in previous posts. I also disabled Turbo, don't need it. Yet.
Also i don't know how to deal with the panel situation, i kinda like the laptop, and probably there is no option (for this configuration) with a FHD for EMEA coutries. So, i'm certain there's the options to accept it or return it. I'll try to get a discount and keep it.

 

Is your e5570 listed as i5-6440HQ at 35W ?
I am trying to understand Dell's configurations i5-6300HQ 45W and i5-6440HQ 35W for this machine.
As I understand from intels page 35W is configurable-TDP where the frequency might be limited depending on thermal conditions. I believe Dell's is deciding (via its firmware) how. But if your machine is also listed as 35W looking at the list you send it can hit 3.1Ghz turbo speeds...

thanks.
ilker.
P.S. Both 6300HQ and 6440HQ has TDP 45W. But Dell decides to limit 6400HQ using cTDP and don't change anything for 6300hq. I am trying to understand the effect of cTDP to performance and and how do these configs compare.

 

Yes. I have the 35W 6440HQ.

It can sustain 4 cores at 3.1GHz, 2 cores at 3.2GHz and 4 cores at 3.3GHz based on running wPrime with different numbers of threads.

John

 

Thanks for the info. These numbers looks like a good compromise. It is interesting they are better than 6300HQ 45W. Seems like 6440hq 35W is a better choice with lower tdp.
ilker.

 

Dells advertising re: wattage is incorrect; all the HQ processors in the E5470/E5570 appear to be downrated to 35W in the BIOS, at least as reported by the Intel Power Gadget.

I haven't seen any definite reports on the M3510, but I know how I'd bet...

 

FYI also see my 6440HQ CPU power consumption graph I posted here. The power limit doesn't appear to affect the raw CPU performance but might well affect the combined CPU+ iGPU performance.

John

 

For really heavy GCC compilation, I've definitely noticed some slower turbo rates on the E5470 vs. the M5510, and some kernel throttle messages on the E5470. It's not enough to make a difference in my day to day work, but my guess is if I benchmarked building something immense that multi-threaded well (say, Chromium or Firefox) it would be noticeable.

It's still noticeably faster than the M3800 (i7-4712HQ) despite slightly lower clock rates under turbo, although how much of that is the extra RAM vs. the processor, I couldn't say.

 

Eikkkk?!! Downrated to 35W?? Does anybody know how this will affect the performance of a 6700HQ or a 6820HQ ?

 

On the -6700HQ, no idea.

On the -6820HQ, maximum turbo speeds on all 4 cores (running non-AVX code) at the 35W profile on my person E5470 runs at around 2.9ghz sustained vs. 3.2ghz on the full 45W profile on my work machine (M5510.) Max single-threaded turbo seems to be the same 3.6ghz on both.

Aside from the wattage profile, there's obviously some cooling system quality difference between the machines as the M5510 is designed to cool another 40W of GPU on top of 45W of CPU (although the E5470 is quieter under load.) I rarely use the dGPU on the M5510, so it is not stressing the cooling.

 

Recently played with e5570 with 6440HQ 35W. Previously I used thinkpad P70 and Acer VN7 (always GPU off) both 6700HQ. In daily usage (with some cpu intensive tasks) no noticable difference in performance.

Both 6700HQ machines were quiet when idle but had sudden fan jumps with moderate usage, and had too conservative (for a cpu's rated 100C) fan levels. They were kicking in/out around 40-45C.

E5570 had lower rpm levels (quiter) at same temperatures and I find less dancing in temp and fan speed. I don't know if this is because Dell's better fan management or 6440HQ 35W is thermally more stable. I guess both...