PDA

View Full Version : Wazzaram



kick
01-10-2013, 08:40 PM
To prevent any more hijacking of maedar's thread(by me)

Ill try n cut it short.
I only have sandra for testing purposesAIDA locked out .
In sandra
present ram
9-9-9-24 1T 1333 bw 18gb/s 1.55v

10-10-10-28 2T 1600 21gb/s 1.61v

I dont think its going to run at a higher speed than that ,unless loosening out to 12's or something.

The samsung ram ,well AIDA gives different readings to Sandra.

See this article:

Samsung 8GB 30nm DDR3 1600MHz Memory Kit Review - Overclocking Fun! - Legit Reviews (http://www.legitreviews.com/article/1959/4/)

That guys tweaking gives somewhere around the AIDA scores you posted,different timings/v but same speed .
Theoretically Your setup now should give around 25-26 gb/s in Sandra.Would you be able to test n see if it does.. thx :), just wondering if the upgrade is worth it.
If I had bought 1600 ram originally,it might not be and due to postage costs from UK etc I could go ahead n get some gskill 2133 stuff,admittedly at 11 timings for a lower price.

Either way I suppose Id have to sell the 1333 stuff :(

wazza300
01-11-2013, 01:35 AM
link me to the software and ill run a benchmark for you,ive never used sandra before

wazza300
01-11-2013, 01:45 AM
its showing 28gb per sec,in that test you linked to he got 26gb per sec

http://i48.tinypic.com/2sbjypi.jpg

kick
01-11-2013, 03:04 AM
Great: merci,
nice figs seems v good.

Sandra isnt as usefull as AIDA.or free everest as it used to be!, but it stays freeware :)

My two horrible low speeds ,or at least low bandwidth :bawling: , are on the bottom,2nd from the top is what I thought was the green samsung , but its some other variety running at 1866.
The top one is some sandy E ,those extra cores make nice figures :) whether youd notice it in rl dunno :crazy:

oh yeh gb/s :)

5428


editIf I get the memory , Ill use a new sig "Samsung Green is People!", if no one gets the ref.,no worries :uhh:

kick
01-12-2013, 04:44 AM
1. That green ram seems to be around the best performing 2133 capable stuff Ive seen

2.My memory when I bought it 2 years ago was the equivalent of 58 good 2133 stuff was probably double that price then.The Samsung green I could buy for that price now and less.

Unfortunately ,cos of the system design(mine I mean,and my usage,general and games, I wouldnt see that much of a performance diff,memory measurements alone,or even used for a combination readout arent as relevant as on older systems).,maybe the equivalent of another 100 mhz in cpu clock speed?, a couple of frames per sec in games or something.
Cost to me say 51 inc postage to here..maybe get 15 if lucky after ebay commision on my present ram..At present cpu clock,not much rl difference,of course it might help get a higher cpu clock at a lower voltage,sustained, but thats a bit of a gamble.
Ill update if any change.

wazza300
01-12-2013, 06:52 AM
it does run higher on my z77,2200mhz i havnt really tried for mor but performance in aida64 tends to drop off after 2133mhz for me so thats where i keep it at

kick
01-17-2013, 06:05 AM
I thought Id post up this sandra compilation
cpu speed is either 4.8 or 4.9ghz in each case, Top 3 are 4.9.

The top 3 in the graph are my new 1600mhz rated mem and it hasnt been fully benchmarked,Id be fairly sure the xmp 1600mhz profile would be fine.
Voltage on the 1600mhz mem is 1.5v in all cases

Voltage on the 1333mhz is 1.545 at 1333mhz and 1.61 v at 1600mhz.

I havent gone "tweaking" the new memory cos I need to bench it ,and also considering the perf diff in real terms between the memory speeds is less than what is shown:
even at 2133 speed the perf inc with timing variations n voltage change might not be worth it :0.

Still at least I do have 1600 out of the box memory and the profile is read to v and timing specs.

Bah just noticed,the mem speed doesnt show in the screen shot
Top is 2133
2nd is 1866
3rd is 1600
4th is 1600
5th is 1333

5491

wazza300
01-17-2013, 07:07 AM
is that the gskill memory you bought at 2133mhz? looks good if it is,what dram voltage with 2133mhz?

kick
01-17-2013, 07:27 AM
Yeh running 4.9 Ghz its the 1600 stuff 8-8-8-24 xmp profile at 1600
I did the 1866 and 2133 at 1.50v too,
I just put in 10-10-10-27 for 1866 cos if it worked at 8's for 1600 thought should be ok at 10's for 1866,booted up fine.did a qwik benchmark.
Go ram .so loosened off to 29 for 2133..no windows

loosened down to 10-11-11-29 and then into windows.seemed ok , so did the sandra bm..just rough n ready testing.. it might not even last 2 min in prime ;)

I suppose with a bit of v or timing adjust ,it might bench stable ,but hey at least I now have mem that boots over 1600!

kick
01-28-2013, 07:05 AM
Just on that xbit article I linked and tRFC from the post in Asrock forum.
I loaded in 96 for it seems to be fine.. but not much diff ;)

2143mhz benches out ok.I left in 1.53v..might as well.

The pic..the green text is the cheap 1333mhz ram which wont go faster than 1600.. at least not at cas 10!
The red text is the 1600 stuff which will do 2133.
The interesting aspect is the point at which both sets are running at 1600 at approx the same cpu speed..4.8-4.9.

The genuine 1600mhz memory is a full 2 cas settings faster at 1600, but in performance terms you wouldnt notice.Dram speed(with the same cpu speed) seems to be king even with loose timings.

That xbit article..since Im stuck at 2133(ish)..and 2500 memory is around 120 and 2800 memory is around 250 with 1.65v and timings of 13 and 14! perhaps yours will not only bench better but actually perform better..since AIDA is thread limited?

nb the actual ss is at 100.05 bclock 4.82ghz cpu and 2143 memory(stable for me) but thats about it in terms of a reasonable speed/fan noise and temps

As a matter of limited interest..Got 5.1 ghz up with a 100base clock..the bandwidth was running about 29gb/s at 2133..hey I thought maybe ill do a ss..but no lets be realistic..bench a little first

1.57v+ and 95-96C core temps within a minute, I cancelled the test rapidly! :crazy: ,I decided to pass on the 29gb/s screenshot as being just a tad unrepresentative :uhh:

5551

wazza300
01-28-2013, 08:35 AM
it should help lower the latency by lowering trfc,it doesnt improve read/write/copy figures much if at all

kick
01-28-2013, 10:43 PM
Yeh perhaps latency by .1-.3 ns

On my net travels I came across a guy running what was originally 1600 spec ram at 9-10-10-24 1t at 2133 with tRFC of 88 at 1.55v.It was low voltage ram.
It seemed familiar somehow.:laughing:

Since my own runs at 9 with 1.65v(maybe even 1.61-1.64 but didnt try) I decided to dial that in.. with secondary timings tightened up from auto and lo..or hi if you like:cackle:.. sod all difference :)

I suppose ill check to see if it will go all 9 timings at 1.65 or something but like on sandra above,or the v fast memmax2 check Im not expecting much difference.
Tightening timings ,at 2133 anyway seems to give at most .5 gb/s and around .5 ns in latency.

wazza300
02-03-2013, 12:49 AM
what figures are you getting then kick?

http://i48.tinypic.com/10f5nab.jpg

kick
02-03-2013, 01:36 AM
Ah well lets see..
hmm I have a readout from an old version of aida saved in documents too.. ill put that in.

Here we go..hot off the bench :)

The secondary timings are 38...128rc 5 rrd 12wr 6rtp 6 tr 25frw and 8wcl

latency looks slow and lvl3 cache not so good(then again your cpu has different amounts?..i must put back in that 96rc and see what happens
5577

kick
02-03-2013, 02:55 AM
Heres another with tRC 96 and 10-11-10-24 which I think is stable also..but doesnt make a lot of difference.
The 5/6ns on memory alone could be down to the 9cas.
The cache figures.6 of one n half dozen of the other..probly the diff in cpu speed,and or size?
Ithink I posted before that 9-11-10-28 seemed to be ok ..but needs 1.63-1.65 v that might well pull the latency down to 32/33 in AIDA but moving from 1.53v to 1.63+ just for that hardly seems worth it.
I read something too about a 24gb/s "wall",whether thats to do with the memory or what .?.
Try a few MaxxMem2 runs..just for fun :0

5578

wazza300
02-03-2013, 03:12 AM
I cant get 21 stable on my z68 but can on z77,z68 im using 10-10-11-28-1t timing @1.55v z77 its 9-11-11-21-1t @1.55v

if you can get 21 stable then that would lower your latency more

its still a lot faster than your old memory scores

kick
02-03-2013, 04:55 AM
I call,and raise you one nanosecond ;0

Ive no idea if this would prime/occt stable..the secondary timings are..not as tight as they could be either ,but heres the result on Aida.. just for info,but would you think its really worth tweaking around?
I mean personally I dont notice much difference at all..except for the full 266mhz speed changes like from 16>18>21.
For sure an ideal1.53v setup at 2133 would be good,but there doesnt seem to be any "holy grail":clap:() at least not on this memory/p67 and gen2 cpu

What about z77/ivy higher speeds..like whatever the next is..2400 at 12 timings?,any joy there -or a difference you could feel?

5579

wazza300
02-03-2013, 06:09 AM
i can run 2200mhz but speeds are lower i think latency is lower too,2133mhz seems to be the sweetspot

thers not much benefit from high ram speeds on sb/ib