G.SKILL Ripjaws 8GB F3-12800CL7D-8GBRH 1600 7-8-7-24 1.6 (2 x 4GB)

[youngpro]

These ripjaws are an interesting kit, as I work in the IT industry and use dedicated machines for virtualized server testing, i can really see a great use for these... 4GB sticks are have a bit of performance behind them and i don't have to trade in my left arm in exchange for..






TEST PLATFORM

• Gigabyte P55A-UD7
• Intel Lynnfield 870
• Gigabyte 6850
• Corsair AX1200
• Corsair Force 40GB

Just to start with i took a look at what these are capable of at some stock settings with some low voltages as the low voltage kits seem to be popular with systems builders.. stock settings are no problems at a low1.4v





BANDWIDTH COMPARSON @ STABLE SETTINGS

Now it is often looked upon badly at loosening off TRCD much past 8/9 but with a kit like this I think clocks like 9-10-9-24 makes sense. This kit is going to benefit from some extra bandwidth and most real world applications only care about bandwidth and not tight primaries or subs. Lets look at some bandwidth comparison with this kit. This kit is P55 and AMD targeted, so on the Lynnfield side of things it would be nice if we could raise out BCLK a bit at 2:10 to get that uncore up a fraction.

16437 MB/s read @ 1700 MHz 8-9-8-24 1T, 1.5v





18362 MB/s read @ 1900 MHz 8-9-8-24 2T, 1.5v






19885 MB/s read @ 2100 MHz 9-10-8-24 2T, 1.5v







RECOMMENDED STABLE SETTINGS

This is the settings I like on the Intel platform, I would run this in my 24/7 rig.

2000 9-10-9-24 2T 1.5 vdimm, You might find some kits will do 2050 or 2100 easily. My kit will LINX also at 2050 but then I need to use higher VTT, so I will choose 2000 9-10-9-24.






Even after LinX for an hour with these sticks at 1.6 volts they don't get much above 30 degrees celcius in a room of 23 degrees celcius.




It is worth noting this kit performs much better 2T, the bandwidth loss is minimal but the gains in MHz are high. Once going past about 900 MHz dropping from 1T to 2T will really let these sticks open up and show what they are made of.