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2500MHz Patriot Viper-II Sector-5 DDR3 Kit E-mail
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Written by Servando Silva   
Wednesday, 29 September 2010
Table of Contents: Page Index
2500MHz Patriot Viper-II Sector-5 DDR3 Kit
Patriot Sector 5 Features
Closer Look: Patriot Sector 5 DDR3
Patriot Sector 5 SPD
Viper II Sector 5 Voltages
RAM Testing Methodology
Benchmark Tests Results
Application Performance Results
Patriot 'Sector 5' Overclocking
Final Thoughts and Conclusion

2500MHz Patriot Viper-II Sector-5 DDR3 Kit

Benchmark Reviews recently tested a 2133MHz G.Skill memory kit. The results showed that in real-world applications, there's not a lot we can receive from that kit compared to lower frequency ones. However, there are some applications that take advantage of high-end kits giving a small boost to the system increasing memory bandwidth and thus, overall speed. While 2000+ MHz kits are becoming the standard for DDR3, there's still a big gap between 2133MHz and 2500MHz. Most CPUs won't be able to run such high frequencies and motherboards could also be a limiting. Even if Benchmark Reviews proved a high-frequency kit isn't that necessary, Patriot Memory sent us their best kit for review. They really want to show their kit is a must for high-end enthusiasts and overclockers, and Benchmark Reviews is putting those words into test.

Running at 2500MHz, the Viper II 'Sector 5' Edition 4GB kit is one of the fastest kits on the market available. This kit is completely intended to be used per high-end enthusiasts and overclockers, nothing else. The reason is simple. First, to run at 2500MHz you need a very strong IMC (integrated memory controller) and you won't find something like this in a Core i3/Core i5 processor. Even with the newest Core i5 655K Unlocked processor, which allows you to enable a 2133MHz memory multiplier, you won't be able to pass 2200-2300MHz. Since you're limited to a 1600MHz memory multiplier with Core i7 CPUs, you need a 209MHz BCLK, which isn't possible with low-end and some mid-end motherboards.


Patriot ships their Viper II Sector 5 Edition kit inside a slim red box. There not much information about this kit in the package, but if you're buying this kit, you should really know what you're buying or you must have a lot of money to spend on a memory kit that you won't benefit from. Today, we will test this kit in a Core i7 860 system paired with a high-end P55 motherboard which allows some extra tweaking inside its BIOS.

Let me tell you something: when I received this kit for review, I was actually a little bit afraid to be able to reach the 2500MHz barrier. I had never tested such a high-frequency kit like this, and there aren't a lot of reviews bragging about this kit even after some weeks of being launched. To be prepared, I took a pair of high-end motherboards and 2 different CPUs to test in order to avoid any limits. I was even prepared to get a Core i7 875K CPU if needed, or just to admit I couldn't reach 2500MHz and let users know it wasn't an easy task. Finally, after fighting some days with this kit, I was able to reach the 2500 magic number, and actually, get higher frequencies than some other technology-sites with some extra tweaking and knowledge. So, let's go ahead to the features and specifications...

Manufacturer: Patriot Memory
Product Name: Viper II 'Sector 5' Edition 2500MHz 4GB
Model Number: PVV34G2500C9K
Price As Tested: $309.99 at NewEgg

Full Disclosure: The product sample used in this article has been provided by Patriot Memory.



# Expensive RAM with anemic gains,.....RealNeil 2010-09-29 03:58
I'm just not sure that this RAM's value is there. Yes, you get faster performance settings, but at a whopping big price. The real world application performance for someone who doesn't O/C the heck out of their computer wasn't there either.
I do like the fact that the timings are on an XMP profile, so if you DO buy this RAM, you don't have to mess around much to set it up properly. XMP is a really good idea as far as I'm concerned. (I'm a 'set it and forget it' kind of guy)
I probably wouldn't go out and buy this RAM unless some wonderful thing happened to my finances and I found myself able to get the best of everything.
I know that Intel released an unlocked Core i7-875K processor recently. I wonder if the unlocked CPU would be able to benefit more from this RAM?
I am considering buying special RAM (8GB G.SKILL Flare) for the AMD 1090T hex-core system that I plan to build soon.
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# mannersRealNeil 2010-09-29 04:01
I keep forgetting to say this in my original comments, but this is a good review, Thank you.
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# RE: Expensive RAM with anemic gains,.....Servando Silva 2010-09-29 06:18
This RAM is basically done for overclockers. If you don't overclock that much, just get a less expensive kit. All the i7875Ks I've seen have weaker IMC than the old i7 860s, so I din't really think there's a benefit with the unlocked CPU. Also, the i5 655K has a higher memory multiplier, but the i7 8765K has the same as the one I used (1600) as far as I know.
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# @Servando SilvaDom 2010-09-29 08:29
Or your rich and have less sence.
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# OC Heaven:))Duracellmumus 2010-09-30 02:15
Qpi/Dram voltage past 1,35V can kill a I7.

I kill one with 1,6V, on Patriot viper 2Ghz 3-Chanel kitt.

THX, No More!
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# RE: OC Heaven:))Adam 2010-09-30 05:46
What? 1.35v?

The recommended max is 1.65v, there arent even that many kits which will run at less then that. Complete rubbish that your i7 was killed on 1.6v.
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# # RE RE: OC Heaven:))Duracellmumus 2010-09-30 08:15
The max Dram voltage is 1.65V that's true. But I speak abaut the Qpi/Dram voltage,
that's Powering the Integrated Memory Controller.
1,6V set by XMP:)
When I try lower voltage, it cause NO POST.
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# RE: # RE RE: OC Heaven:))Servando Silva 2010-09-30 12:26
Yes, QPI/IMC/VTT voltage at 1.6v is really high, but your kit really needs that? This one needs 1.35v or something similar depending on your CPU, and I've seen many people going above 3GHz (Memory frequency, of course) with 1.45-1.55v I really don't know why would you need something that high for a 2GHz kit.
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