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Review: Patriot Divsion 4 Viper Xtreme low-latency memory

by Tarinder Sandhu on 27 January 2012, 08:36 3.5

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How we test


Comparison Memory

  Patriot Viper Extreme 16GB G.Skill RipjawsZ 16GB G.Skill RipjawsZ 8GB
Model PXQ316G00LLQK F3-12800CL9Q-16GBZL F3-12800CL9Q-16GBZL (halved)
Capacity 16GB (4x4GB) 16GB (4x4GB) 8GB (2x4GB)
Speed 1,600MHz DDR3 1,600MHz DDR3 1,600MHz DDR3
Timings 8-9-8-24-1T 9-9-9-24-2T 9-9-9-24-2T
Voltage 1.65V 1.50V 1.50V
Price* £100 £75 £40
Cost per GB* £6.66 £4.79 £5
*Approximate, correct at time of writing

Test bench

CPU Intel Core-i7 3930K (3.2GHz, 12MB L3 cache, hexa-core, LGA2011)
Motherboard ASUS Sabertooth X79 TUF (0802 BIOS)
Storage device Crucial 256GB RealSSD C300 (SATA 6Gbps)
Graphics card Sapphire Radeon HD 6950 2GB (Catalyst 11.11)
Power supply Corsair HX1000
Operating system Windows 7 Ultimate SP1, 64-bit


SiSoft Sandra 2012 Lite (download)
HEXUS.PiFast (download)
Cinebench R11.5 (download)
3DMark 11 v1.0.1.0 (download)
Formula 1 2010 (homepage)
Just Cause 2 (homepage)
Battlefield 3 (homepage)


We've already taken a look at 'regular' DDR3-1,600 memory, as it pertains to a Sandy Bridge-E platform. That perusal of the G.Skill set also showed the lack of difference if dropping from quad-channel to dual-channel. In that respect, pushing down the latencies shouldn't have too big an impact on overall performance.


We're providing a very rough estimate of the overclocking ability the Patriot kit by seeing how well it scales when raising the memory multiplier on the ASUS board. Maximum voltage is set to the default 1.65V.

Patriot Division 4 Viper Xtreme 16GB

It has no problem in running looser timings at higher speeds, but 2,133MHz was out of reach. Fiddling around with the bus clock and checking smaller incremental rises in frequency we learned that, at 9-9-9-24-2T, the sample set topped out at just shy of 2,000MHz.

We also tested with the preset 8-9-8-24-1T timings, as configured by the XMP setting. The board would occasionally boot into Windows at 1,866MHz but fail any stress test. Again, after zeroing-in on the actual stable frequency by means of adjusting the BCLK, we reckon that, at the presets, an overclocked speed of about 1,800MHz is achievable.

Our testing shows that the modules have a fairly small sweetspot; they've been engineered with low-ish latencies and a moderate speed in mind.