@Boot_WB

BIOS talks to SPD, finds values it doesn't know about at compile time, refuses to go to memory checking. This is from a post made on the internet by someone I don't know, but knowing how stupid the DELL branded BIOS is in other regards (specifically eGPU not being possible with 4GB of memory, mPCIe slots locked to certain specific products etc), I'm willing to take it on face value. Seems little point in spending big bucks on something other people with similar MB+BIOS have already failed to make work.

@delshay

My laptop supports 2x4 just fine, I just made the mistake of thinking the choice between 2 and 4GB would mean an additional 2GB module, instead it meant the 2GB single module was replaced with a single 4GB. Since I couldn't find a matching 4GB and I had matched 1GB modules in a drawer, I opted for that. I used to have 32 bit W7 + 32 bit Ubuntu installed, now I have 32b Ubuntu plus 64b Ubuntu instead, and I haven't even used the 64b installation for over 6 months.

_________________
This weeks pet peeve:
Using "voltage" instead of "potential", which leads to inventing new words like "amperage" instead of "current" (I, measured in A) or possible "charge" (amperehours, Ah or Coulomb, C). Sometimes I don't even know what people mean.

buying a memory module and it turns out it is not to be compatible, users on other site edit the SPD to turn it into a compatible module, that will be "any" memory module.

What comes to my mind is faster memory module edited to work at slower speed @800MHz with low latency at boot-up as memory module(s) are so cheap now, and this is what I am looking into..

ALL MODIFICATION AT YOUR OWN RISK

Last edited by delshay on 04-Sep-2015 at 09:19 AM.

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The Machine: Bride Of The Pin•Bot by Williams Electronics

@delshay

Possibly a good plan for desktop, fast laptop memory is virtually non-existant.

Any technical reason why chips from a DIMM can't be reballed and soldered on a SODIMM, along with the SPD?

I only have experience with discrete memory layouts (DDR2 and DDR3 achievements unlocked ), not an expert on modules (yet )

_________________
This weeks pet peeve:
Using "voltage" instead of "potential", which leads to inventing new words like "amperage" instead of "current" (I, measured in A) or possible "charge" (amperehours, Ah or Coulomb, C). Sometimes I don't even know what people mean.

@NutsAboutAmiga

>X1000 use DDR2, the max speed of DDR2 should be 8533 Mb/s.

PA6T specs say, for dualcore version: DDR2-1067—16GB/s read or write

When using both memory buses there should be room for improvement...

(IIRC there still is no PA6T aware compiler for AOS4???)

_________________
- KimmoK
// For freedom, for honor, for AMIGA
//
// Thing that I should find more time for: CC64 - 64bit Community Computer?

@olegil

Quote:

olegil wrote: @delshay Possibly a good plan for desktop, fast laptop memory is virtually non-existant. Any technical reason why chips from a DIMM can't be reballed and soldered on a SODIMM, along with the SPD? I only have experience with discrete memory layouts (DDR2 and DDR3 achievements unlocked ), not an expert on modules (yet )

Heat & voltage requirement for low timing just like the Kingston memory module in this thread. Both will be the main factor as it needs to operate in a confined space & tight timing even with lower frequency will most likely require higher voltage, but Kingston (laptop) along with G.SKILL (desktop) has already proved it can be done @1.8v.

Both can overclock easy past 860MHz+ on just 1.7v min @CL4 without sweating.

Reballing should not be that difficult, not that much different to reballing a CPU.

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The Machine: Bride Of The Pin•Bot by Williams Electronics

DDR2-1066+ (desktop) with CL4 is somewhat limited without increasing voltage, the CORSAIR 8888 is the most lethal of any memory in this area, it can clock just look at page 10, this is version 1.1 and Corsair did version 1.2 & 1.3

http://www.legitreviews.com/corsair-xms2-dominator-pc2-8888-memory-review_388

The G.SKILL Trident 9600 may can do CL4 @DDR2 1066 level, but I think It needs 1.85 - 1.95v max voltage. ..need to check web.

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The Machine: Bride Of The Pin•Bot by Williams Electronics

@delshay

Well, I've bought a pair of 800MHz CL5 now (dirt cheap), at least. My old single channel setup was with CL6, and current dual channel 667MHz setup is CL5, so I'm confident I'll see an improvement. I'll keep my eyes open for a CL4 in the future, though. Thanks for sharing your knowledge.

I wonder if I can just "poke" (UBoot command "mm") the DDR2 controller on my SAM460 to decrease the latency. Btw, maybe a link to our previous discussion of this is useful:

http://amigaworld.net/modules/newbb/viewtopic.php?mode=viewtopic&topic_id=39522&forum=33&start=20&viewmode=flat&order=0#745532

_________________
This weeks pet peeve:
Using "voltage" instead of "potential", which leads to inventing new words like "amperage" instead of "current" (I, measured in A) or possible "charge" (amperehours, Ah or Coulomb, C). Sometimes I don't even know what people mean.

Works here also on windows 10 (64bit) don't know if it will work on windows 10 (32bit).

NOTE: check supported chipset.

http://www.passmark.com/products/rammon.htm

Last edited by delshay on 05-Sep-2015 at 07:18 PM.
Last edited by delshay on 05-Sep-2015 at 07:18 PM.
Last edited by delshay on 05-Sep-2015 at 08:11 AM.
Last edited by delshay on 05-Sep-2015 at 08:05 AM.
Last edited by delshay on 04-Sep-2015 at 03:39 PM.
Last edited by delshay on 04-Sep-2015 at 03:35 PM.

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The Machine: Bride Of The Pin•Bot by Williams Electronics

Rare memory

http://www.ebay.com/itm/Kingston-Technology-HyperX-4-GB-Kit-2x2-GB-Modules-Notebook-KHX6400S2ULK2-4G-/191688211052?hash=item2ca181fa6c

software at your own risk

http://tweakers.fr/cputweaker.html

http://tweakers.fr/memset.html (works here on my laptop)

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The Machine: Bride Of The Pin•Bot by Williams Electronics

@delshay

Btw, I would be totally tempted if the donkey orifice who is selling them would ship to the civilized world. Quote from item ad:

"May not ship to Norway - Read item description or contact seller for shipping options. | See details

Item location:
Fairfax, Virginia, United States

Ships to:
United States"

And:

"International customers are responsible for any custom fees, import fees, and duties/taxes levied by their country. These fees are non-negotiable.
The declared value will reflect the actual purchase price. This is non-negotiable.
International shipping times vary from country to country. If delayed, please contact local customs agency or postal office for status."

Quote from sellers own FAQ on the contact form:
"Do you offer international shipping?
This seller doesn't offer international shipping."

Got the 2GBs I had bought, seems I was screwed as they report as 667 CL5. For some reason I still got a 11% boost in speed from my previous setup, which was a 10 percent boost from the original setup.

So 1x4GB 800MHz CL6 < 2x1GB 667 CL5 < 2x2GB 667 CL5

Memtest86 reports that I'm using 266MHz (DDR532) 5-5-5-15 in ALL cases I had at hand right now (couldn't find my 4GB module this morning). And when I'm at home I don't get full CPU speed (stupid dell laptop insists that my original dell charger is not a dell) so memtest refuses to check memory bandwidth. In Linux I can override that to get full CPU speed, but there are so many reasons NOT to buy a Dell that I don't know where to even begin.

And since you didn't believe me, here's the reason I'm sceptical about CL4 in my laptop (same SODIMM, same motherboard, same BIOS):
http://forum.notebookreview.com/threads/kingston-kingston-hyperx-ddr2-800-cl4-sodimm-compatibility-issues-bios-mod-needed-probably.505085/

_________________
This weeks pet peeve:
Using "voltage" instead of "potential", which leads to inventing new words like "amperage" instead of "current" (I, measured in A) or possible "charge" (amperehours, Ah or Coulomb, C). Sometimes I don't even know what people mean.

STANDARD DDR1

Not sure why there are no 2-2-2-5 400Mhz 1GB stick, but it is here now, and I can confirm it boots here on a PC with no adjustment needed "2.5v", but is awaiting second DIMM for Dual Channel. Testing is done on 100 pin DIMMS, then transferred. ..Both are (Custom Private Memory Modules).

Last edited by delshay on 27-Sep-2015 at 03:13 AM.
Last edited by delshay on 27-Sep-2015 at 03:06 AM.

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The Machine: Bride Of The Pin•Bot by Williams Electronics

@olegil

If the Kingston memory module does not work on your computer, you could try this on a SAM, this is what I am going to do. Remember if the memory module(s) do not work, you can always edit the SPD if you have the skill.

ALL MODIFICATION AT YOUR OWN RISK

What is the voltage output of the X1000 DDR2 ram? it seems to have a 900Mhz bus.

Last edited by delshay on 27-Sep-2015 at 10:12 AM.

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The Machine: Bride Of The Pin•Bot by Williams Electronics

@olegil

changing the memory timing from the bios is ok, but not all of the options are there. Some bios only let you change the main timing parameters, and some do not have any options at all.

Changing memory timing in the SPD does have some advantages.

1. it will boot with the fastest timing with or without bios options (provided computer is compatible).

2. test has shown here the bios option could be limited, and editing done from the SPD may produce more Bandwidth.

Here I have 2x1GB DDR1 module 2-2-2-5-7-1T 400Mhz, but I also have 2x So-Dimm DDR2 800Mhz with Enhanced Bandwidth, both showing another step forward in performance at default frequency.

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The Machine: Bride Of The Pin•Bot by Williams Electronics

@delshay

What tools do you use to change the SPD?

_________________
This weeks pet peeve:
Using "voltage" instead of "potential", which leads to inventing new words like "amperage" instead of "current" (I, measured in A) or possible "charge" (amperehours, Ah or Coulomb, C). Sometimes I don't even know what people mean.

@olegil

Quote:

olegil wrote: @delshay What tools do you use to change the SPD?

I am not allowed to say.

Test is conducted at hardware level before SPD is edited, so I already know if memory module can operate at a faster speed before SPD is edited. I have also found Hardware Manufactures are changing dram chips without changing revision, so in some cases you could end up with worse performing memory modules, even if it is the same model.

If hardware is not up to speed, in some cases I can change it. I can find what's preventing a memory module from operating at a higher speed (Low Latency) and fix it at hardware level, then edit SPD to reflect changes.

The 7 in the above DDR1 is "TRC" something not normally quoted and is Dual Channel the rest of the timing most users should know.

The best thing about having the timing in the SPD, In most cases I don't need to do any adjustment, I just insert the memory module and it boots.

The above 2x1GB DDR1 is probably the fastest Dual Channel ever as it has Enhanced Bandwidth also built-in. ...DDR2 is just being fine-tuned.

Last edited by delshay on 08-Dec-2015 at 10:49 PM.
Last edited by delshay on 08-Dec-2015 at 10:45 PM.
Last edited by delshay on 07-Dec-2015 at 05:15 PM.

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The Machine: Bride Of The Pin•Bot by Williams Electronics

@olegil

Quote:

olegil wrote: @delshay Apparently DELL laptop BIOSes don't support CL4 timing and will fail POST if one is detected, so I'll try to find some CL5 and think about a bit of overclocking instead.

OFF TOPIC

As you like upgrading your laptop try this one at your own risk. it may not be visible, but my lap has it. Mini PCIe slot.

Now I just swapped my old WI-FI card in my old Laptop to the latest standard WiFi 802.11ac and it works a dream.

The card also has Bluetooth version 4.2, also the latest standard.

Now I am seeing devices I have never seen before, their not my devices.

ON TOPIC

There's a small possibility the world first PC-3200 "CL1.5"-2-2-5 "2GB kit" with Enhanced Bandwidth could be here, more news when tested.

Last edited by delshay on 15-Jan-2016 at 10:54 PM.
Last edited by delshay on 15-Jan-2016 at 07:34 PM.

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The Machine: Bride Of The Pin•Bot by Williams Electronics

World first 1GB DDR1 PC-3500 2-2-2-5 is here & working with Enhanced bandwidth built into the SPD & is CL1.5 ready.

Has top speed of 440Mhz, with 2 out of the 3 memory modules able to operate at the new lower voltage 2.6v, other requires 2.7v awaiting fix.

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The Machine: Bride Of The Pin•Bot by Williams Electronics

DDR 1 News (1GB Module)

I have done it! ...DDR 1 obliterate & sets a new world record when using 2-2-2-5 timings.

The record was held by Corsair PC4400 (223Mhz). My custom first module operates at 225Mhz & second module at 232Mhz awaiting second module for dual channel both with Enhanced Bandwidth built into the SPD.

more news & screenshot when second module for each is completed.

Other Notes:

Top end speed detected 235Mhz with above timing, so PC-3700 (466Mhz) can be done.

Last edited by delshay on 23-May-2016 at 10:48 AM.
Last edited by delshay on 23-May-2016 at 10:47 AM.

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The Machine: Bride Of The Pin•Bot by Williams Electronics