Ripjaw 1600 7-7-7-24 vs Ripjaw 2000 9-9-9-27

[RVM]

Which 2x2gb sticks should I get for my Gigabyte P55M UD2 (might get the UD4) and i5-750? The 1600 7-7-7-24 or the 2000 9-9-9-27? They're comparable in price right now.

What's the difference between the Trident and Ripjaw series other than the heatspreader?

Thanks!

[RVM]

Aww come on someone's gotta have an idea here...

[Vorg]

I can only saw, compare the price. I bought 1600 even though I plan to run 1333 because the the 1600 was $5 cheaper per stick pair then the 1333. For AMD's everyone says lower clock and tighter timing s are often faster depending on how much lower the memory clock vs how much tighter the timing.

[Tradesman]

The 2000 will give you a lot more to play with, you can always downclock it it you should so desire i.e. if you drop it to 1600, you could probably tighten the timing to 7-7-7-21 or possibly even down to CL6.

The actual 1600 sticks are more than likely going to be 1600, might be able to get a slight OC on them.

If possible, I always suggest going with faster RAM, as said can always downclock, you have the avenue to use it in a mobo upgrade, if your mobo doesn't support the actual speed currently, there may be a good possibility of it supporting it in the future, via BIOS upgrade.

[Oldjazz]

It depend of which processor you'll use because like me, I'll use the i5 750 and info from anandtech.com if you set the voltage over 1.65v you can burn your CPU.

So i've ask help here from support admin and here is his answer.

I would suggest the G.Skill F3-12800CL7D-4GBRH or F3-16000CL9D-4GBRH. The DDR3-1600 would be an easy attainable. DDR3-2000 will provide great speed, but it will require major processor overclocking in order to operate at that speed. If you are familiar with computers and need the speed, go with the DDR3-2000, otherwise the DDR3-1600 would be quite fast as well since it has a CL7 latency.

Thank you
GSKILL SUPPORT

Since I don't want to overclock I bought the 1600 CL7

Hope it has helped you as much it has help me.

[Tradesman]

With the new 1156 and 1366 socket mobos coming out recently, the manufacturers are all scrambling for for market share, thus the BIOSs are relatively immature, but are being updated rather continuously. As more people contact Gigabyte, ASUS and others about faster and faster RAM, they will be addressing the issues more quickly, which is one of the reasons when you look at the RAM specs you often see an '(OC)' after a given speed. My guess is that running the 2000 at 2000 within another month or two will only require a minor OC, in the meantime, as said earlier, you could run the sticks at 1600 now and probably at tighter timings than the stock 1600 sticks since the 2000 ones are more robust sticks (ICs) to begin with.

[ehume]

With i7 800 series and i5, the memory controller is on the CPU. MB manufacturers can do nothing about it. Any memory can only go to a multiplier of 12, which limits a 133 clock to DDR1600. To get the 2000, you have to go to a BCLK of 167. OTOH, the 2000 I have does go down to 7-7-7-22 when BCLK is 133.

[Tradesman]

While the MC is indeed on the CPU, how it integrates with with the rest of the mobo is still in large part based on the mobo's BIOS, if you were to take a look at the specs for the Intel CPUs and their MCs, they far exceed what is available on any mobo currently being manufactured. The mobo manufacturers are constantly working on upgrading the hardware they produce to accommodate the capabilities of the CPUs and thus the integrated MC.. i.e. when the i7 were first released you could find 2000 RAM, now 2200 is out and 2400 is hitting the market

[ehume]

I hope your expectations come to pass. It would be nice to be able to have a multiplier of 15 - that would give us DDR2000 with a BCLK at default.

[Oldjazz]

Here they were able to set up on the i5 750 a multiplier of 21, take a look
http://www.anandtech.com/mb/showdoc.aspx?i=3671&p=7

[GSKILL TECH]

i5 750 max CPU Multiplier = 20X
i5 750 max Memory Multiplier = 10X

So you'll need to run 200 x 10 = DDR3-2000

i7 860 max CPU Multiplier = 21X
i7 860 max Memory Multiplier = 12X

167 x 12 = DDR3-2000

Thank you
GSKILL SUPPORT