This post is more than 5 years old
16 Posts
0
3519
December 7th, 2016 11:00
17 R4, i7-6820HK Bad Performance?
Hi all,
I'm the new proud owner of a brand new AW 17 R4, top of the range laptop, thanks to my new job!
I went for the 4.1Ghz CPU upgrade so as I do a lot of single thread work (web development) and I'm not really a gamer, I just wanted the extra power.
However, using the Intel Extreme Tuning Utility, during benchmarks is not getting past 3.3ghz and ends up being Temperature throttled.
When using prime 95 for a single cpu test, its also not getting near 4.1Ghz
has anyone else had a similar issue.
No Events found!
eternalkp
314 Posts
0
December 7th, 2016 11:00
4.1GHz for 1 core when you pair it up with graphic amplifier.
The 6820hk runs at 2.7GHz and turbo boost itself upto 3.6GHz (1core), 3.4GHz (2 cores), and 3.2GHz (4 cores). That's how mobile skylake cpu works.
3.6GHz is insane fast. You could easily OC the 6820hk to 4GHz (4 cores)
www.youtube.com/watch
MGSteve
16 Posts
0
December 7th, 2016 12:00
Now I understand why Dell said you could only have the 4.1Ghz Option with the 1070 chipset. Not sure I would have gone for the option if I had known that.
The problem is that the cooling is shocking as standard, even with no OC at all, CPU temps hit 100deg C under load almost immediately
I don't really want to dismantle the laptop simply to apply some decent thermal paste.
hmm, not very impressed there Dell, especially as I ended up paying nearly £400 extra to have the 4.1 Ghz CPU. If I had stuck with the normal one, I'd have had the AMD gfx option and saved a boat load of money :(
MGSteve
16 Posts
0
December 7th, 2016 12:00
Oh and I had to laugh, the 1TB SSD I had included, as delivered had a write speed of 50mb/s. It appears you need to disable a cache option in windows and it shoots up to 500mb/s, which is still rather slow for nvme...
digitalwiz
1 Rookie
•
105 Posts
0
December 7th, 2016 20:00
I'm starting to think the 17r3 is a better choice. Mine runs fast and cool and still has the 4k screen
Liky
1 Rookie
•
61 Posts
0
December 8th, 2016 00:00
What option did you disabled is windows ?
eternalkp
314 Posts
0
December 8th, 2016 06:00
This is what happens when you make the chassis thinner for a gaming laptop. My 17 R3 6820hk idles at 27F and gets upto 75-80C when gaming or using Adobe Media Encoder:
www.youtube.com/watch
Your 1tb SSD write at 500mb/s because it's a Samsung PM951. My 256gb writes at 300mb/s. Shocking a lot of these OEM vendors use this SSD: HP, dell, Alienware, etc.
If you need fast writing speed. The Samsung pro 960 has upto 2.5GB/s write speed.
MGSteve
16 Posts
0
December 8th, 2016 06:00
Nope, the SSD is a Toshiba XG4 - which appears to be brand new as the part number is hardly found anywhere by google! - THNSN51T02DUK NV
The XG3 has read / write speeds of 2400 & 1500, so the XG4 should be at least these.
It makes me wonder if the M2 slot is actually x4 as advertised...
MGSteve
16 Posts
0
December 8th, 2016 06:00
Liky - open Device Manager, right click on the drive, select 'Properties'.
Then select Policies and uncheck the 'Turn off Windows write-cache buffer flushing.." option.
HiredGun008
2 Posts
0
December 30th, 2016 10:00
I have exactly the same problem on 2 same disks (THNSN51T02DUK NV) on an Alienware 15R3 I've just received but my "'Turn off Windows write-cache buffer flushing.." checkbox is well unchecked. I also upgraded to the latest Intel Rapid Storage Drivers but It has not done anything better...