Tuning For Better MemTweakIt Scores

[MarshallR@ASUS]

http://rog.asus.com/135582012/overcl...weakit-scores/

If you’re getting into MemTweakIt with your P67/Z68/Z77 ASUS motherboard, you will want to read up on how exactly the scores are calculated in order to get a better result. MemTweakIt is designed not as a hardcore competitive tweaking program, but rather the algorithms are setup for a more fun approach that promotes real tweaking efforts, rather than just buying or binning the fastest kit.

A, B, C & D are principle factors in MemTweakIt’s scoring, and each has relative weighting. It’s also worth noting the code does not treat Sandy Bridge, Ivy Bridge or Sandy Bridge-E CPUs equally, due to architecture differences.

Intel ‘Ivy Bridge’ 3rd Generation Core Processors on LGA1155



DRAM frequency has a high weighting, while A looks at the the baseclock is multiplied by the ratio used:

float A = _pTSet->m_fBCLK * _pTSet->m_fRatio;

Set B checks the primary timings (CR = Command Rate).

float B = _pTSet->m_fCL + (float)_pTSet->m_itRCD + (float)_pTSet->m_itRP + (9.0f * (float)_pTSet->m_iCR);

C & D check the secondary and tertiary timings, and has the lowest weighting;

float C = (float)(_pTSet->m_itRAS + _pTSet->m_itRRD + _pTSet->m_iREFCycleTime + _pTSet->m_iRefreshInterval + _pTSet->m_itWTR + _pTSet->m_itRTP + _pTSet->m_itCKE + _pTSet->m_itFAW + _pTSet->m_itWR + _pTSet->m_itWCL);

float D = (float)(_pTSet->m_iTRRDR + _pTSet->m_iTRRDD + _pTSet->m_iTWWDR + _pTSet->m_iTWWDD + _pTSet->m_iTRWDRDD + _pTSet->m_iTWRDRDD + _pTSet->m_iTRWSR);

Overall the calculation is as follows:

_pTSet->m_fEfficiency = (A * 127500.0f) / (53.0f * B + 0.6f * C + 20.0f * D);

Then, finally, if you run in dual chanel with an Ivy Bridge CPU, the score will be multiplied by 1.92x compared to single channel.

if (_pTSet->m_iNbChannels == 2) _pTSet->m_fEfficiency *= 1.92f;

Intel ‘Sandy Bridge’ 2nd Generation Core Processors on LGA1155



DRAM frequency has a high weighting, while A looks at the the baseclock is multiplied by the ratio used:

float A = _pTSet->m_fBCLK * _pTSet->m_fRatio;

Set B checks the primary timings (CR = Command Rate).

float B = _pTSet->m_fCL + (float)_pTSet->m_itRCD + (float)_pTSet->m_itRP + (9.0f * (float)_pTSet->m_iCR);

C & D check the secondary and tertiary timings, and has the lowest weighting;

float C = (float)(_pTSet->m_itRAS + _pTSet->m_itRRD + _pTSet->m_iREFCycleTime + _pTSet->m_iRefreshInterval + _pTSet->m_itWTR + _pTSet->m_itRTP + _pTSet->m_itCKE + _pTSet->m_itFAW + _pTSet->m_itWR + _pTSet->m_itWCL);

float D = (float)(_pTSet->m_iTRRDR + _pTSet->m_iTRRDD + _pTSet->m_iTWWDR + _pTSet->m_iTWWDD + _pTSet->m_iTRWDRDD + _pTSet->m_iTWRDRDD + _pTSet->m_iTRWSR);

Overall the calculation is as follows:

_pTSet->m_fEfficiency = (A * 127500.0f) / (53.0f * B + 0.6f * C + 20.0f * D);

Then, finally, if you run in dual chanel with an Sandy Bridge CPU, the score will be multiplied by 1.8x compared to single channel.

if (_pTSet->m_iNbChannels == 2) _pTSet->m_fEfficiency *= 1.8f;

Intel ‘Sandy-Bridge-E’ 3rd Generation Core-i7 Processors on LGA2011



Due to the fact LGA2011 is quad-channel, not dual-channel, an additional Z-factor for total DRAM size is added while channel count is removed. The rest is largely the same. As before, DRAM frequency has a high weighting, while A looks at the the baseclock is multiplied by the ratio used:

float A = _pTSet->m_fBCLK * _pTSet->m_fRatio;

Set B checks the primary timings (CR = Command Rate).

float B = _pTSet->m_fCL + (float)_pTSet->m_itRCD + (float)_pTSet->m_itRP + (float)(_pTSet->m_iT_CCD) + (9.0f * (float)_pTSet->m_iCR);

C & D check the secondary and tertiary timings, and has the lowest weighting;

float C = (float)(_pTSet->m_itRAS + _pTSet->m_itRRD + _pTSet->m_iREFCycleTime + _pTSet->m_iRefreshInterval + _pTSet->m_itWTR + _pTSet->m_itRTP + _pTSet->m_itCKE + _pTSet->m_itFAW + _pTSet->m_itWR + _pTSet->m_itWCL);

float D = (float)(_pTSet->m_iTRRDR + _pTSet->m_iTRRDD + _pTSet->m_iTWWDR + _pTSet->m_iTWWDD + _pTSet->m_iT_WRDR + _pTSet->m_iT_WRDD + _pTSet->m_iTRWSR); float Z = (float)dsize;

Overall the calculation is as follows:

_pTSet->m_fEfficiency = 2.1f * ((A * 127500.0f) + (Z * 1000.0f)) / (53.0f * B + 0.6f * C + 20.0f * D);

[Zygomorphic]

Thanks! Now we know how to play the game...like those gamblers who count cards at blackjack.

[mrwolf]

lol nice.. I know this is designed for the P67/Z68/Z77 ASUS motherboards but does it work well on the G75vw ??

[FlanK3r]

is possible reworking version for AMD chipset too? At Phenoms II was CPU Tweaker, but now is only AMD overdrive and this is very sensitive for chnages timings in windows.

[MarshallR@ASUS]

lol nice.. I know this is designed for the P67/Z68/Z77 ASUS motherboards but does it work well on the G75vw ??

It does work on G75s yes but since you have no tweaking options in the BIOS you'll only get 'one' score.

There's no AMD option planned sorry, the features we are taking advantage of are (afaik) exclusive to the Intel IMC.

[Zygomorphic]

I have run it on my G53SX, so I know it works there, at least. Like @Marshall said, you only get one score

[mrjohns]

I would like to use MemTweakit but it doesn't work on my new Maximus V Formula. It worked until my next reboot, and then all you could see is small box with MemTweakit emblem in the bpx.
Has any body had this problem?

[johndamon]

mrjohns - this is a known issue. It has to do with the Desktop resolution setting. I think if you are using "smaller" then MemTweakit will not load properly. There is a Thread about the issue. Hope this helps.