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My TW3X4G1333C9DHX kit doesn't seem to work at 1333


pgenx

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Hello,

 

I think I bought a bad TW3X4G1333C9DHX kit, I hope someone can clarify it before I complain to the shop where I bought it.

 

I've been running my PC with a TWIN3X2048-1333C9DHX (two modules CM3X1024-1333C9DHX XMS3-1333 1024MB 1333MHz 9-9-9-24 1.50V ver1.1) for one year, FSB overclocked from 333 to 400 resulting a CPU speed from 2.66GHz to 3.20 GHz. Memory values in BIOS set to automatic, only the voltage set to aproximatetly 1.63V, speed reported by the memory 1333, overclocked value 1600. MEMTEST reported 800 MHz (DDR1600). So far, so good, no problems at all.

 

I dedided to add more memory modules, I could't find the same modules I had, so I bought a TW3X4G1333C9DHX kit (two modules CM3X20418-1333C9DHX XMS3-1333 2048MB 1333MHz 9-9-9-24 1.60V ver2.1), they really looked compatible with the ones I had so I should not have any problems, right ?

 

Not so fast ..... I first added the new modules to the old ones, the whole set (4 modules) didn't work at 1333, the maximum seemed to be 1280, and the system didn't boot at 1600 (even setting higher voltages). So I removed the old 1024 MB modules leaving only the new 2048 MB ones. Same result, without any overclocking and automatic values for the memory, the BIOS reports 1066 for the memory, when setting the FSB to 400, the BIOS reports 1280 for the memory. I can set the memory to 1333 but then the memory runs at lower speed, and setting the memory to run at 1600 the system does not boot.

What MEMTEST86+ V2.11 reports with the 2048 MB modules, CPU @ 3.20 GHz, setting the memory speed to different values, and voltages to 1.63V (no memory errors in several passes in each configuration):

 

1066 -> 533 MHz (DDR1066) 7-7-7-20

1280 -> 640 MHz (DDR1280) 9-9-9-25

1333 -> 600 MHz (DDR1200) 9-9-9-25

 

 

When checking the 1024 MB modules with Everest (I have an old screenshot), this is what I got:

memory speed DDR3-1333 (667 MHz)

@666 MHz 9-9-9-24

@592 MHz 8-8-8-22

@444 MHz 6-6-6-16

 

When checking the 2048 MB modules with CPU-Z now:

Max Bandwidth PC3-8500F (533 MHz)

@457 MHz 6-6-6-18

@533 MHz 7-7-7-20

@610 MHz 8-9-9-23

@686 MHz 9-10-10-26

 

 

 

So, according to the information from Everest and CPU-Z, the 2048 MB modules don't seem to be similar to the 1024 MB modules to me, they really look completely different. Anyway, forgetting about the 1024 MB modules, any chance these new 2048 MB modules are bad and don't really work at 1333 ?

 

Thanks and sorry for the long post.

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Mmmm, no news is bad news..... or is it so obvious that the modules are bad that nobody replies ?. If the modules are supposed to work at 1333 (667 MHz) and they don't then I didn't get what I paid for. I'll return them to the shop on monday, and they will deal with Corsair.

 

Anyway, I'll wait until monday morning (my local time) to get a reply from the experts.

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  • 3 weeks later...

Hello again,

 

I'm back from my vacation, thanks for the reply. I did what you said, tested each module one by one, for that I removed any overclock and tested the memory at 1066 and 1333, at 1066, Memtest86, Windows Everest and CPUZ report the same memory speed 533 MHz; but at 1333, Memtest86 reports only 600 MHz and it takes ages to complete a full pass, although CPUZ and Windows Everest report 666.7 and the Everest memory speed test gets good values (maybe a Memtest86 bug ? who knows.....). I overclocked the system again but the memory won't work at 1600, the system does not even POST, these modules work at 1333 maximum in my system.

 

Anyway, I won't return the modules. I've lost some performance but I don't have any guarantee that other new modules will work at 1600 like my old 1GB modules.

 

Take care !

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Hello RAMGUY,

 

I'm not sure what you mean. At the moment I have the FSB to 400, the maximum for this CPU in this motherboard without burning the CPU with high voltages. FSB 400 and Multiplier 8 which results in 3200 MHz. Leaving the new 2GB module settings in the BIOS to AUTO results in memory speed 1066 MHz so I force the speed to 1333 MHz. If I set the memory to 1600 MHz then the system does not boot.

I have the same FSB settings now as I had before with the 1GB modules, except the memory speed, before it was 1600 and now it's 1333. I've uploaded some photos of CPUZ, I hope it helps; if you'd like to see any other images of my set up, please let me know.

 

CPUZ Memory - FSB 400 Mem 1333

http://farm3.static.flickr.com/2537/3792865420_504f20b47c_m.jpg

 

CPUZ cpu - FSB 400 Mem 1333

http://farm3.static.flickr.com/2421/3792865414_8d1fee9d4f_m.jpg

 

 

The 2GB modules are running now at the specs voltage, if I raise the voltage, could they work at 1600 ? I can't think of any other BIOS value .....

 

Take care !

 

PS: at the moment I have all the modules together (1GB and 2GB = 6GB) but I have the same problem with only one 2GB module......)

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Hi,

 

the 2GB modules don't run at 1600, confirmed. All modules mixed (4 modules) work at 1333, tested with Memtest, no errors (I don't believe they really work at 1333 because memtest reports only 1200 and the tests take ages, but anyway....), and it's a miracle because the 1GB modules and the 2GB modules are not compatible at all.

One thing that worries me, why the memory package clearly reads DDR3 PC3-10666 1333 MHz but CPUZ reports DDR3 PC3-8500F 1066 MHz ? where's the error, in the physical modules, in the package or in CPUZ ? is there any possibility that if I return these modules, I would get a new ones that are really PC3-10666, as it says in the package or it's just marketing and they are all the same ? because for the 1GB modules, CPUZ reports the same as the package, so I would say that CPUZ works fine ....

 

More photos of my set up:

 

CPUZ SPD 2GB Modules

http://farm4.static.flickr.com/3464/3797743336_7689559429.jpg

 

CPUZ SPD 1GB Modules

http://farm4.static.flickr.com/3505/3797743344_ebc66470da.jpg

 

Take care !

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  • Corsair Employees
That is normal depending on the modules version, but they would have to be set to something that the MB can post at with default Voltage IE DDR1066 at 1.5 Volts and the tested settings would need to be manually set IE Cas 9-9-9-24 at 1.6-1.7 Volts, and I am sorry but mixing memory has never been supported the tested settings would only be for the way they are sold IE One set at their tested settings.
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  • 2 weeks later...

Hi,

 

I've already do the tests with only the new 2GB modules and I have the same problem. I get the same memory speed values with 6 GB, with 4GB and with only one 2GB module, no need to continue with the mixing-modules discussion.

 

Again the simple question, let's focus on one 2GB module. Why the memory package clearly reads DDR3 PC3-10666 1333 MHz but CPUZ reports DDR3 PC3-8500F 1066 MHz ? as I said before, leaving all memory settings to AUTO in the BIOS results that the memory runs at 1066, what a coincidence, don't you think ? why should I know about BIOS settings, latencies, etc. ? if I buy a memory that reads DDR3 PC3-10666 1333 with big letters in the package, it should work like that without any BIOS settings, if not then sell it as DDR3 PC3-8500F 1066 MHz, and I won't buy it to avoid compatibility problems (the ones I'm having at the moment ....)

 

Take care !

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  • Corsair Employees
pgenx, I have already explained that, the modules SPD has to be set to something the MB can post at with default voltage, IE DDR1066 at 1.5 Volts and the tested settings of the modules would need to be manually set.
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Hi,

 

ok, let's end this thread asap. Let's focus only on the 2GB modules to avoid mixing modules, having 4 GB is OK for me. You know my motherboard and the modules specs, do you have any idea of the BIOS settings I have to change (voltages, latencies, etc.) to make those modules really work at 1333 ? as I said, when I make the modules work at 1333 according to the specs in the label of the modules, Memtest reports they really work at 1200, and I believe that because the memory tests take ages to complete, I suppose Memtest tries to run the tests as fast as possible, so if the tests take ages it's because the memory is slow.

 

Believe me guys, I'm having this discussion because my other 1GB modules worked according to the specs, no problems at all, no need to do any special BIOS settings to make them work according to the package specs, and my BIOS, CPUZ and Memtest just showed the expected values, no strange values now and then.

 

Take care !

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  • Corsair Employees
As long as you have them set to 1333Mhz in the bios and CPU-Z has it at those speeds as well then I would not follow what memtest is reading it. Also another way to confirm is check what Frequency the memory boots up in on the boot up screen as well.
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