Phenom2 2.8Ghz system
Everest Ultimate Edition 4.6.224 (y2009 results):
r 7.8GB/s
w 6.7GB/s

ASUS P5K Dlx 2.66Mhz CPU
Sisoft Sandra XI.SP2 (y2008 results);
DDR2 1067 (5/6-6-6-15) 4557MB/s unbuffered, 6625MB/s buffered

x1000 RageMem memspeed:
r32 2.8GB/s
r64 4GB/s
w32 2.7GB/s
w64 3.4GB/s

To me it seems PA6T has pretty ok memory handling.
But should those memspeed results be considered as buffered or unbuffered speed?

Do we have test that reports memory latencies?

Do we have memspeed results collected somewhere?
(interested in AOS4 HW)


(and DDR3 1333 does not seem any faster than DDR2 1067, often slower, someone said it, I went to check)
(some x86 results from the web)(anandtech results)

Last edited by KimmoK on 16-May-2012 at 07:39 AM.

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

OOPS my error please delete Thanks.

this thread was started in 2012.

Last edited by delshay on 01-Sep-2015 at 03:24 PM.
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@KimmoK

PA6T seems pretty much what you'd expect/hope from a 10+ year old CPU/ram combo.
Neither disappointing or particularly good.

As a point of reference modern CPU/ram bandwidth can reach about 70GBps for read and a little less for write (or vice versa, can't recall which).

@KimmoK

Quote:

(and DDR3 1333 does not seem any faster than DDR2 1067, often slower, someone said it, I went to check)

Meanwhile In reality.... Read results from AIDA. It's not just memory type....

@Rose

It really hard to max out memory read/write speed on X1000.
But it helps if you write AltiVec code.
(but it does not help that AmigaOS4 only use one core.)

Last edited by NutsAboutAmiga on 01-Sep-2015 at 03:10 PM.

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@NutsAboutAmiga

Point was that memory controller plays also HUGE part on speeds compared memory type/speed.

@Rose

The only information in your graph is MB/s, number, frequency and type of core. There is no information on type of memory (and number of channels) there.

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@olegil

That's for 3570K.



Tomorrow should be quiet day so can do also single channel and lower memory clock tests too if intrested.

Last edited by Rose on 01-Sep-2015 at 03:38 PM.

@Rose

Well if the CPU/Software is running with the breaks on it does not matter what type memory controller you have. It's going to give you poor score.

X1000 use DDR2, the max speed of DDR2 should be 8533 Mb/s.
RageMem are not even close too this speeds.

And also I find it not so interesting, as programmer I want to know,
Things like speed of read/write speed of float, double, short, byte, int64, int32.
C code vs assembler optimized code and so on.
Because when I know this matrix, I know how to write good code that runs fast.

Last edited by NutsAboutAmiga on 01-Sep-2015 at 06:09 PM.
Last edited by NutsAboutAmiga on 01-Sep-2015 at 05:46 PM.
Last edited by NutsAboutAmiga on 01-Sep-2015 at 05:44 PM.

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I did a test on a number of DDR2 memory modules that is CL3 capable @800Mhz+, I know the memory modules below are made to operate at much higher speed, but I wanted to see which company is doing the best speed binning with CL set low.

Most high performance DDR2 more or less use the same part number.

To separate them I put them though a optional 'CL2' test. Any memory module that registered a very good performance here work flawless at 800Mhz CL3 no matter what I tried,So below is the list of which I think is the best DDR2 ever.

Corsair Dominator 2GB Dual Channel were only memory module to date that register over 500Mhz+ @CL2

10000
9136
8888*

(8888)* best of the three above,10000 can be flakey & 9136 is a bit of luck with a good set.

----------------------------------------------------------------------------------------------------------------

Best DDR2 4GB kit again go's to Corsair Dominator 8500* can do CL3 @800Mhz this is something you will not normally see on a 4GB kit, but it is version specific

*version 2.2 & possible version (1.1 or 1.2. not tested).

Last edited by delshay on 02-Sep-2015 at 03:47 PM.
Last edited by delshay on 02-Sep-2015 at 01:52 PM.

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@delshay

I'm getting closer and closer to swapping out the memory in my old C2D laptop just for kicks. I went from single 4GB@800MHz to dual 1GB@667 a while back because I don't run applications that need a lot of memory on it anymore, and this gave me about 10% higher throughput. or was it 15%? gah, getting old.

This whole DDR scam is really driving me up the wall here. From a PCB layout perspective DDR3 has advantages over DDR2, but the hushing up of latencies really bothers me.

_________________
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 I'm getting closer and closer to swapping out the memory in my old C2D laptop just for kicks. I went from single 4GB@800MHz to dual 1GB@667 a while back because I don't run applications that need a lot of memory on it anymore, and this gave me about 10% higher throughput. or was it 15%? gah, getting old. This whole DDR scam is really driving me up the wall here. From a PCB layout perspective DDR3 has advantages over DDR2, but the hushing up of latencies really bothers me.

try finding this, may also work on SAM 460: KHX6400S2ULK2/4G

EDIT: sorry should have been 4GB kit

Last edited by delshay on 02-Sep-2015 at 01:42 PM.

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Best 'low voltage' DDR2 4GB kit with CL4 setting 800Mhz+

G.SKILL Trident, not even the Corsair(s) in this thread can come anywhere near it with 'low voltage setting & high speed'.

These memory modules are in a class of its own both the 8500 & 9600. The performance you get at a given voltage is normally what you see in Laptops 1.8v. Clocking well pass 860Mhz+ @CL4 even with 1.7v with no hint of any errors whatsoever.

Downside: can't do CL3 @800MHz, failed to register a CL2 reading.


NOTE: 9600 memory is the highest performing "Latency" 4GB kit on this benchmark site, I disagree with this as It can't pass a simple CL3 test at 800Mhz see below.

http://www.memorybenchmark.net/latency_ddr2_all.html

Last edited by delshay on 02-Sep-2015 at 01:24 PM.
Last edited by delshay on 02-Sep-2015 at 01:22 PM.
Last edited by delshay on 02-Sep-2015 at 01:21 PM.

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@delshay

Awesome specs. But seems to be manufactured from about 50% pure unobtainium, afaict. So not much hope of finding one. I guess I'll end up with 2x2GB CL5.

_________________
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.

X1000 could possibly gain improvement with G.SKILL Trident if found to be compatible, with its awesome low voltage set @CL4. Either model will do, but 8500 is more likely to be found now & then on Ebay.

The same apply to the Kingston KHX6400S2ULK2/4G & all the other memory In this thread I have posted, but need to be careful, memory may work but you need to check deep for errors which may not show up during normal use.

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@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.

_________________
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 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.

That's what their said about my 64 bit laptop 4GB max, but it works fine with dual 4GB (total 8GB).

Their also recommended CL5, but to my surprised Laptop works fine with above Kingston CL4 and GFX is much, much faster. I can play Doom 3 with max setting barring one in widescreen. This makes a massive difference and is far to slow with CL5.

Remember to check Laptop for bios update, my Laptop was already working with CL4 with old bios and still works with new bios.

CL4 so-dimm is not that common so manual may not say anything about CL4 so-dimm, so you try at your own risk.

Kingston is the only company that I know that released a CL4 so-dimm.

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@delshay

The difference is that Google tells me someone already tried a CL4 in a similar motherboard with same BIOS and it didn't POST.

_________________
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 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.

You've totally confused me there, and a few links would be helpful if you have the time.
Lower latency ram not working in a system, all other variables aside (frequency, ecc, buffering), is something I have never encountered.
I could understand higher latency CL5 memory not working on a system set up to use CL4, but why would the more responsive CL4 memory not work in a CL5 system?
Aren't memory timings set by the host system (adjustable through bios in most cases) - ie lowest common denominator of individual memory modules CL settings, (unless overridden using bios)?

Last edited by Boot_WB on 02-Sep-2015 at 06:14 PM.

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@olegil

Quote:

olegil wrote: @delshay The difference is that Google tells me someone already tried a CL4 in a similar motherboard with same BIOS and it didn't POST.

you could possibly be right, but you have already found out that Laptop works with a single 4GB so-dimm. what will happen if you fitted a second 4GB dimm 8GB, I bet that's not in the manual, like my Laptop.

There is only one setting here for memory in the bios, and that for the GFX.
CL4 is auto detected by my Laptop.

CL4 is a JEDEC standard, I sure SPD does have 667Mhz as well as 800Mhz profile.


UPDATE COMPATIBILITY:
667MHz 3-4-4-10
800MHz 4-4-4-12

I don't know what memory speed your Laptop support, check manual.

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