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6398
July 31st, 2018 11:00
Aurora R7, non-Dell memory running at 2133MHz
I have the latest R7 with i7-8700(non-K) and per google the maximum memory speed is 2666MHz.
The system comes with two hyundai 2666MHz at slot #1 and #3. I've checked them in cpuz and they both running at 2666MHz.
The problem is the memory I purchased. I purchased two corsair LPX 2666MHz first from amazon and put them in both slot #1 and #3 and slot #2 and #4 but they keep running at 2133MHz. I thought amazon might send me the wrong one so I purchase two corsair lpx 3000 at newegg. The problem persists and when I check in BIOS the memory speed is 2133MHz.
I used Alienware Update software and the BIOS is up-to-date I assume.
P.S. the bios really needs a upgrade since every time I try to save and exit it tells me "save and reset"
Tesla1856
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July 31st, 2018 12:00
No. The Primary Memory Bank is composed of the two white-tabbed slots (XMM1 and XMM2).
Should show in BIOS.
ePSA should pass.
Yes, CPU-Z is right tool. Not only does it show SPD, it shows if running in Dual-Channel.
Fishery
9 Posts
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July 31st, 2018 14:00
screenshots from cpuz
Fishery
9 Posts
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July 31st, 2018 14:00
Thank you tesla again for fast response!
I'm not sure about your term "Primary Memory Bank" and the "XMM1", "XMM2", "ePSA".
cpuz does show it's running in dual channel
Tesla1856
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August 1st, 2018 09:00
ePSA is core Diagnostics from F12 on boot.
The Primary-Memory-Bank consists of the two white-tabbed slots. See their labels XMM1 and XMM2 written on motherboard.
Install your original with two Hyundai 2666 DIMMs in those slots. Capture BIOS, and all CPU-Z screens.
When you do the same for the Corsair DIMMs, I think it will be clear to you what is happening.
Fishery
9 Posts
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August 1st, 2018 11:00
emmm I don't.
I've tried before and I just tried again but no difference. All for memories passed ePSA test with combination of #1 #3 and #2 #4. The only difference is that when two corsair ones are installed, I can choose XMP profile in BIOS. However they are shown as 2132 in BIOS. When Hyundais are installed they are shown as 2666.
Tesla1856
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August 1st, 2018 12:00
Right. Because the Corsair's JEDEC #8 is 1066 mhz. Times two for DDR = 2132 Mhz .
You would have to use a different XMP (or maybe do it manually in BIOS ?). I forget, but turning on OC for memory might also jump to the next JEDEC/XMP profile.
Fishery
9 Posts
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August 1st, 2018 13:00
Thanks for reply! But I only see one XMP profile in BIOS settings.
Tesla1856
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August 1st, 2018 19:00
From my Aurora-R6 notes ... with:
Intel i7-7700K 4.2ghz (Kaby Lake)
16gb (2x8gb) DDR4 Kingston Hyper-X Fury 2667mhz Ram (Dual-Channel)
In BIOS, If I Turn-ON OC-ing, but leave Core-OC OFF, I am still be able to Turn-ON XMP1 or XMP2 and it seems to work (and reports properly high mhz in CPUz).
Fishery
9 Posts
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August 2nd, 2018 10:00
Mine is non-K and all OC settings are disabled in BIOS
Osh_j
4 Posts
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August 11th, 2018 09:00
Did you ever find a solution? I also do not have the 8700k, so im entirely unsure if the majority of the RAM questions and answers are even valid for me without.
I haven't upgraded yet because this motherboard is a **bleep** headache.
robschaap
1 Message
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October 10th, 2019 11:00
I upgraded to 64GB (2 x 32GB sticks) from Corsair Vengence LPX and it booted at 2133. I went to performance settings in the BIOS, XMP1 was disabled. I hit the optimize button on the right side and it refreshed with XMP1 selected. I saved, rebooted and I'm at 2666. In Ubuntu, ram speed confirmed at 2666 as well, seems stable, fast too - as you'd hope.
amstel78
2 Intern
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402 Posts
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October 12th, 2019 19:00
It's a Dell. What did you expect?
Risner08
2 Posts
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October 14th, 2019 19:00
I also have the non 8700k it wouldnt at first so I had to disable the xmp1 and re enable it and I got 3200. Also use the 2 and 4 slot
Risner08
2 Posts
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October 14th, 2019 20:00
Also I have the g skill tridentz 3200mhz ram im getting all 3200mhz on a i7-8700 cpu no overclocking.