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Athlon 860K, any one picking it up? - Page 205

post #2041 of 3195
Quote:
Originally Posted by Himo5 View Post

If your Dimms don't actually show how they are ranked this looks like the only reliable way of finding out.


You need a SPD reader such as RW-Read&Write to read Byte 07 of your Dimm's SPD and then you take the number of ranks (base 1) from Bits 3-5.



There's a fairly significant handicap to having single ranked ram as measured by Aida 64 on my Vishera platforms.
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post #2042 of 3195
Quote:
Originally Posted by cssorkinman View Post


There's a fairly significant handicap to having single ranked ram as measured by Aida 64 on my Vishera platforms.

 

Sorry, the image you quoted misreads the SPD.

 

Rank number is given minus one and not, as I originally assumed, from Base 1.

 

I've corrected the image in that post, which now interprets 001 as Dual Rank.

post #2043 of 3195
Quote:
Originally Posted by Himo5 View Post

If your Dimms don't actually show how they are ranked this looks like the only reliable way of finding out

AIDA64 reads it just fine, even the trial version. It tells you the number of ranks/banks per module. The problem isn't reading ones you've got, its finding out which ones are which before you buy them.
Quote:
Originally Posted by cssorkinman View Post

There's a fairly significant handicap to having single ranked ram as measured by Aida 64 on my Vishera platforms.

The same thing happens to steamroller obviously, but like I said in the past it doesn't translate into much of anything in real world usage. APU's using the system memory for GPU seem to be the big exception where even a small increase in memory subsystem performance has a large impact.
Edited by Scorpion49 - 10/30/15 at 9:56pm
post #2044 of 3195
Quote:
Originally Posted by Scorpion49 View Post

The same thing happens to steamroller obviously, but like I said in the past it doesn't translate into much of anything in real world usage. APU's using the system memory for GPU seem to be the big exception where even a small increase in memory subsystem performance has a large impact.

I agree. The APUs do rely on RAM's own performance for the graphics part, but on real world, AIDA and Co are almost irrelevant. Here's visual proof (one may read this and the following page):

http://archive.benchmarkreviews.com/index.php?option=com_content&task=view&id=853&Itemid=67&limit=1&limitstart=3

For those who are bored, here's the final "juice":
Quote:
Still, as our tests have shown, there's little real world difference between various memory kits, even when the speeds and timings are dramatically different. This is because modern processors contain megabytes of cache memory (15MB in the case of the Core i7-3960X I used), and thus most memory requests will be satisfied from the cache, without accessing main memory at all, and even low-end CPUs these days typically have 2-4M or more of cache. Continuous accessing of system memory is simply quite rare in "real world" applications, while synthetic benchmarks are designed to do just that...which is why you see memory performance differences in these benchmarks, and not in applications. Enthusiasts should remember that having enough memory is much more important than having fast memory, and take advantage of current low prices.
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post #2045 of 3195
Quote:
Originally Posted by Scorpion49 View Post


AIDA64 reads it just fine, even the trial version. It tells you the number of ranks/banks per module. The problem isn't reading ones you've got, its finding out which ones are which before you buy them.
The same thing happens to steamroller obviously, but like I said in the past it doesn't translate into much of anything in real world usage. APU's using the system memory for GPU seem to be the big exception where even a small increase in memory subsystem performance has a large impact.

 

My 30 days were up a long time ago.

post #2046 of 3195
Thanks for the testing Scorpion. I haven't used a single-rank kit before, or otherwise I would have done the same myself on some non-GPU dependent tests. So it looks like the single-rank kit loses by a little, but certainly not by all that much. Interesting.
post #2047 of 3195
Now repeat the same test on APU wink.gif

SR 1866MHz should equal 1600MHz DR or SR 2400MHz, DR 2133MHz in 3DMarks or games.

The bandwidth beyond 1600MHz / 25.6GBs is pretty irrelevant anyway on pure CPUs.
post #2048 of 3195
Quote:
Originally Posted by The Stilt View Post

Now repeat the same test on APU wink.gif

SR 1866MHz should equal 1600MHz DR or SR 2400MHz, DR 2133MHz in 3DMarks or games.

The bandwidth beyond 1600MHz / 25.6GBs is pretty irrelevant anyway on pure CPUs.

Yes, it makes a big difference on my 7700k. Thats where the Mushkin DR kit came from biggrin.gif
post #2049 of 3195
How much extra bandwidth do you get with a 2400mhz DR kit when using the igpu on a 7870K?
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post #2050 of 3195
Interesting thing I noticed, on F6 BIOS my UP4 has noticeable coil noise when moving the mouse, but it does NOT have it with F7 BIOS. I'm wondering if they changed something with the power delivery settings for Godavari? I'm going to have another go at overclocking it with the F6 BIOS now since it was doing poorly on F7.

EDIT: I noticed an immediate difference, I can now boot to windows with 2000mhz NB, I could not even POST with 2000mhz on F7 BIOS.

Double EDIT: 2 hours stable at 4000/2000/1866 with only 1.350V vcore and 1.150V NB. I guess F7 BIOS was completely destroying any hope of an OC with this CPU, I was having to run 1.45V+ for 4ghz before.
Edited by Scorpion49 - 10/31/15 at 1:55pm
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