Mach Xtreme Armor 2133 CL9

Memory

Overclocking

Mach Xtreme Technology has both an aim at the enterprise industry and at the so-called ‘Power Users’, which overclockers are. Looking for the highest possible frame rate in-game or the best possible benchmark score requires the best products, which MX-Tech claims to provide.

For this review the same applies as to the last RAM review; it’s being performed on an AMD 785G chipset which supports a maximum official RAM speed of DDR3-1800. That said, AMD chips benefit more from lower latencies and thus I have searched the best speeds on fixed, low latencies. CAS5, 6 and 9(stock) have been tested, with optimized main timings and all sub-timings on AUTO set in the BIOS.

First the initial overclocking results, shown in CPU-Z, a program used to show exact information on the current system.

Overclocking results

All results were attained with the stock memory voltage of 1.65v. Raising the voltage barely brought any overclocking potential so I decided to stay at a 24/7 voltage.

DDR3-1290 CL5-7-5-18


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The lowest stable timings with the maximum frequency I could get out of these chips. These are of course CAS5 results, but not very impressive due to the low memory frequency.

DDR3-1710 CL6-8-6-20


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This is probably the sweet spot of this memory. At a maximum of 855MHz (DDR3-1710) these sticks can run at CAS6 with tight timings and CR (Command Rate) 1. Loosening the timings didn’t result in any performance increase for overclocking, so the next result will be with at maximum possible speed with rather loose timings.

DDR3-1840 CL9-9-9-24


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The best I could do was 1840MHz on a DDR3-1800 rated chipset; not bad at all. It might be possible to tighten these timings up for possible better results than the 1710MHz results, but since the latter its timings are really tight, I doubt any performance increase will occur. Still looking for that motherboard supplier that feels their AMD 8-series motherboard needs promotion!

At CAS7 and 8 frequencies there were no noticable performance increases over DDR3-1710 CL6, so these results are left out to not overflow our readers with useless data.

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Last modified: February 15, 2011

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