G.Skill RipjawDDR3 1600 7-7-7-24

nheather

nheather

nheather

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I've just received some of this memory.

http://www.overclockers.co.uk/showproduct.php?prodid=MY-043-GS&groupid=701&catid=8&subcat=1387

I've just fitted it to my system and the good news is that it works.

I should say that at this point, I'm not ready to build a full system until I get my Windows 7 at the end of the month, so all I had for the test is

PSU
MoBo
CPU and Cooler
RAM
Video Card
Monitor
Keyboard

So all I've done so far is fire up the BIOS.

All started without a problem but I was surprised by the default memory setting.

It was running at 1333 - not really surprised by that because the MoBo treats 1600 as an overclock.

But it gave the SPD as 9-9-9-24.

Very surprised by this because the advert listing shows that it is SPD programmed at 7-7-7-24

I did try changing it manually to 7-7-7-24, still at 1333 and it rebooted fine - but that is hardly stressing it.

The other thing, if I do want to to run at the advertised speed I have to use Manual setting. That's fine for the 4 main parameters because they are quoted but there are a few others aswell - how do I know what to set them to?

Such as

TwTr Command Delay
Trfe
Write Recovery Time
Precharge Time
Row Cycle Time
RAS to RAS Delay

Anyone else got this memory? If so are you seeing similar?

I have a sneaky feeling that this isn't really SPD 7-7-7-24 RAM but is actually the normal 9-9-9-24 stuff which has been hand selected to run at 7-7-7-24.

Cheers,

Nigel
 
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Glad it's working, I was going to buy this exact RAM for my new i5 build but after speaking to a member of OcUK sales staff I went for OCZ Platinum - apparently there are reliability issues/above average failure rates on G-Skill RAM?
 
The spd is read from a little chip on the ram, not the actual memory chips, it doesn't tell you what chips are actually on the module (you can take the heatsinks off and look for yourself). 9-9-9-24 is the DDR3 'standard' (look up JEDEC if you want to know more). Quite often you have to manually set the advertised speeds and timings, their should be a memory divider you can change to get them running at 1600 although you may need to overclock your FSB/BLK.

If it's advertised as coming with reprogrammed spd setting then it should work with out being set up, it might be your motherboard overriding the spd. (because it sees 1600 as an oc it just sets everything to the standard)
 
Glad it's working, I was going to buy this exact RAM for my new i5 build but after speaking to a member of OcUK sales staff I went for OCZ Platinum
Click to expand...

Oh .... I did the opposite. I ordered the OCZ Platinum 1333 first and then I became a little concerned about the OCZ running at 1.8V and whether it would be better off with certified 1600 should I need it in the future.

Not sure about whether the BIOS is reading the SPD correctly. Even if it runs at 1333 by default I would have thought the SPD has an entry for 1333.

What I can say is that the BIOS has two columns against the RAM parameters, one headed SPD and one headed Auto. I would have assumed that the SPD column would show what it had read from the SPD and the Auto column the values it had decided upon.

Setting it manually is okay but for the parameters listed above as I have no idea what to set those to. All I can do is leave them on the SPD\Auto settings but since the ones for the main parameters are so wrong I don't have much faith in the settings for the ones I don't know.

Cheers,

Nigel
 
Did some research and found a review in German. Can't read German but I can understand the pictures.

The answer is that the 7-7-7-24 is in the SPD but as an XMP extension. My motherboard can't read XMP so doesn't pick it up.

Setting it manually seems to work.

I'm happy now - thought I'd been sent the wrong memory or that it had been over-sold.

Cheers,

Nigel
 
Right done some more testing and I've decided overall I am not happy.

From my testing

1333 @ 7-7-7-24 @ 1.65V = PASS
1600 @ 9-9-9-24 @ 1.65V = PASS
1600 @ 8-8-8-24 @ 1.65V = PASS

but

1600 @ 7-7-7-24 @ any volatge (1.65V to 1.85V) = FAIL

By fail, I mean won't even POST, the BIOS on my board traps it as a boot failure.

I should also add that the settings that PASS above mean that they POST, I haven't tried MemTest or anything.

Going to RMA mine and drop back to something more reliable - should have stuck with the OCZ Platinum in the first place.

Cheers,

Nigel
 
nheather said:
Right done some more testing and I've decided overall I am not happy.

From my testing

1333 @ 7-7-7-24 @ 1.65V = PASS
1600 @ 9-9-9-24 @ 1.65V = PASS
1600 @ 8-8-8-24 @ 1.65V = PASS

but

1600 @ 7-7-7-24 @ any volatge (1.65V to 1.85V) = FAIL

By fail, I mean won't even POST, the BIOS on my board traps it as a boot failure.

I should also add that the settings that PASS above mean that they POST, I haven't tried MemTest or anything.

Going to RMA mine and drop back to something more reliable - should have stuck with the OCZ Platinum in the first place.

Cheers,

Nigel
Click to expand...

Identical problem using a gigabyte ma790xt will not post at 7 7 7 7 24 @ 1600. Runs fine at default auto settings. Hve not tried 8 8 8 24 yet as fed up of clearing cmos each time
 
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I purchased the same ram for a different computer, doesn't work on advertised speeds, switches back to 1333 If I select 7-7-7-24. Works fine at 8-8-8-24 CR1 though.

Returned it because of being incapable of running at advertised speed.
 
Mine runs at 1600 7-7-7-24 @ 1.65v, that does seem to be around the limit though, it was causing problems at 1680mhz. Currently doing some testing at 7-7-7-22.

Might try giving a bit more voltage, not really sure what a safe area is on DDR3 though?
 
Mine runs at 1600 7-7-7-24 @ 1.65v
Click to expand...

Which MoBo chipset is that on? If AM3, can you let me know what you had to do with the BIOS and voltages to acheive this.

I've had a response from G.Skill and they confirmed that it is hand-selected standard 1333 RAM (9-9-9-24) and that it will ONLY run at the specified speeds on P55 chipsets.

I've done a fair bit of research and it seems a lot of people are having problems with this RAM (AMD and Intel) and many are having success. It sounds like the RAM is pushed to it's absolute limits to acheive advertised speed and there is no guarantee that just because it does it in the test system that it will do it in yours.

Cheers,

Nigel
 
I ordered the Ripjaw 2000mhz stuff but Overclockers sent me the 1600mhz CL7, which I've decided to keep. All works perfectly at the recommended timings and voltage. I haven't pushed them anything further as yet.
 
I ordered the Ripjaw 2000mhz stuff but Overclockers sent me the 1600mhz CL7, which I've decided to keep. All works perfectly at the recommended timings and voltage. I haven't pushed them anything further as yet.
Click to expand...

Again, which MoBo chipset?

I'm not looking to push beyond the advertised - just trying to acheive them.

Cheers,

Nigel
 
i hav also bought the same but only gone as far as 1333, 7-7-7-24, my only problem is that it says on the pack engineered especially for lga1156 intel i5,i7 so i guess it may be tough for me!
 
Add me as another disappointed G.Skill 7-7-7-24 @ 1600MHz, but for slightly different reason......

XMP profile on my motherboard (P7P55D Deluxe) happily sets it to 7-7-7-24 @ 1.6v and all seemed well....except BIOS only reported 2039MB (:confused: why not 2048MB) and Windows reports different amounts in different places ! So the Welcome screen of my temporary Vista Ultimate x64 shows 4.00GB, CPU-Z states DIMM 1 and DIMM 3 populated (each with correct readings) and Sidebar gadget/Task Manager only show up as 2GB - Booo !

Sticks out, then in one at a time = one stick works just fine, the other refuses to allow POST etc.

RMA time, ordered this instead
 
Just to add to this,

I have tried the G.Skill Ripjaws 1600mhz 7-7-7-24 kit on my ASUS M4A785TD-V EVO and i can almost match the XMP profile apart from the CAS Latency. It is impossible to run at CL7, pc would fail to boot.

I could run at 8-7-7-24 + match other settings found in XMP profile.

But to top that off 1 of my dimm sticks was faulty.

After extensive browsing of the gskill forum i saw an admin post that cl7 cant be guaranteed on amd platforms and even on some intel boards it was recommended to run the mem voltage @ 1.9v

Anyway i have since purchased from OcUK the patriot g series 1600mhz 7-7-7-20 kit and it runs absolutely perfect on my am3 system :)

If anyone is wondering how i got to view the XMP profile, i used everest ultimate edition (trial version)

G.Skill Ripjaws 1600MHz 2x2048MB (7-7-7-24) - XMP Profile

CL = 7
RCD = 7
RP = 7
RAS = 24
RC = 34
RFC = 88
CR = 2
RRD = 6
WR = 10
WTR = 6
RTP = 6
 
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