Another thing to know when looking at gem charts is that that shows the value of adding one gem in addition to all your gear, not replacing another gem. So it is not exactly the same thing as the gear comparison charts show. In most cases this distinction is not important, but if you're close to a step in haste value (which you can check in stats graph) it might be different.

Yes, I realize that (should have included it in my original post I guess). However, with relative stat values at 2.5 for haste and 1.8 for sp, we get:

20 haste : 20 * 2.5 = 50 "points"
23 sp : 23 * 1.8 = 41.4 "points"
12 sp, 10 haste: 12 * 1.8 + 10 * 2.5 = 46.6 "points"

So 20 haste still beats 23 sp gem. Am I understanding the relative values wrong?

All people should keep in mind that using to much haste will bring you near to the gcd.
I think in most cases where the difference is nearly null you should go for spellpower.
If you use this calculator Spellhastecap Calculator you can see how far away you are from the cap.

Indeed some people say, that you have to use potions or icy veins not in bloodlust, but in some fights you have only a small timerange where you couldn't use icy veins and bloodlust in a series.
And there is still the lag problem. If you have very short casttime (nearyl 1sec) the lag factor becomes bigger.
At last there are fights where the enrage phase is a phase where some pc systems become very busy and cause more lag.

Hey guy´s I just got some gear but because of it I got under the hitcap. Now I reggemed and I runned my character through rawr and now it wants me to get rid of the gems I just put in to increase my hit rating.

Is it cause rawr doesn´t look at the hit cap or is it something I'm missing?

Edit: Now I'm looking at it again and in Rawr my hit rating is over the hitcap but in game it isn't, I desellected all buffs anyone know what's wrong?

Rawr takes chance to hit from Talents into account, whereas the ingame Character window does not - it only shows the chance to hit you gain from hit rating.

So Rawr is right, you are in fact overcapped.

About Dislodged Foreign Object:

Note that the item grants a buff that increase spellpower over time, and that arcane magi have a spell damage multiplier that also increase over time, and these two buffs stack multiplicatively.

If we simplify the last AM as equal to an AB and removes the stacks (i know this is ridiculous but please let me do it), this can be simply modeled by the integral of the product of two linear functions. Apparently this will yield an beneficial second order term. this term solely depends on the cast time of arcane blast.

Since this term does not depend on base spellpower or damage multiplier, integrating over one single rotation would suffice.

Simple calculation shows that this effect will roughly be equivalent to an extra 75 spellpower throughout the duration.

Since i did not consider the discontinuous increment of either buffs or take the effort to model AM or incomplete rotations, etc, this is not expected to be the exact number. Nevertheless it would be sufficient to show that RAWR will be underestimating this trinket for an arcane mage. (Similarly it will overestimate the trinket from H PoS)

You can't equip the normal and heroic versions together. Rawr must not register that.

Kavan this morning implemented an update that checked if similar named items (such as the Ashen Brand rings, or the trinkets in ICC) is equipped, it will not show up in the list of available items. This also effects ToC trinkets so at this point we would have to manually edit the item so that we can see the ToC trinket. As an example, a trinket such as the [Reign of the Dead] would not appear in the list if you have [Reign of the Dead] equipped. You would have to edit [Reign of the Dead]'s information so that you can see it in the list.

It shouldn't affect ToC. It specifically looks for 251/264 or 264/277 item level pair.

Ok, I was confused by the wording you used for the Patch. The way it was put was that it was only working for ICC trinkets and we would have to edit the ToC trinkets.

What that was supposed to mean is that if there are some other items that you want to be treated as unique you can add that yourself.

In Rawr 2.3.9, Nibelung was fixed to properly account for the Valkyr damage (mage module), and also to reflect the new 2% proc rate. Rawr now shows Nibelung264 as beating most 245-258 MH/OH combos.

Edit: checking the Rawr Stats tab, "By Spell" table, the Valkyr proc appears to be modeled correctly (at least for Arcane). That said, Valkyrs will generally fall a bit short of expectations due to movement and early deaths.

From my raiding logs, Val'kyr damage is always significantly ahead of what Rawr reports it to be. Rawr says the damage percent is 3-4% for a 5 minute fight under most circumstances, but it ends up proccing a lot more than that, consistently. The actual damage percentage that I see is along 6-8%. Most likely this is because of what can trigger a Val'kyr proc. Nibelung procs off of spell casts: IE, casting Living Bomb on a target, or Molten Armor's damage (which is a spell cast). Furthermore, the actual damage that Rawr reports for the player is always going to be higher in Rawr than it is in the game. Suffice it to say, Rawr operates under an optimal playing style, and unless you are some kind of godly machine, you aren't going to be hitting the DPS Rawr says you will. With that in mind, your damage will go down, but more than likely, the number of Val'kyr procs won't -- which simply means that Val'kyr damage ends up being a larger percent of total damage than Rawr expects.

I don't think Nibelung could be modeled better in Rawr, because it's entirely dependent on odd casting situations (IE, applying Living Bomb to multiple targets in a row means you're casting, say, 8 spells in 10 seconds versus 4), and Rawr assumes a single target fight.

My last 25-man Deathbringer Saurfang fight was 4:49 (289 seconds, with 284 sec of DPS time), and Val'kyr damage accounted for 10% of my total damage. I can't play perfectly -- Rawr says my DPS should have been 9316 for that time, with 3.72% of my damage coming from Val'kyrs. My actual DPS was 7391 though. It's hard then to really get an accurate depiction of Nibelung in Rawr. Sometimes it appears accurate as well: on a 3:48 Marrowgar fight, Rawr lists it as 3.77% of my damage. Actual in game was 4.0%. What Rawr doesn't see is that I had a number of Val'kyrs die in the fire (despite their very impressive healing). So actual proc rate is still higher.

I wouldn't run with this knowledge and assume that Nibelung is better than other weapons that Rawr lists as being ahead of it though. I wouldn't use it over [item]51799[/i], for instance, even though that staff is 6 ilevels lower.

Quick question. With no filters on I can't get any of the Lich King's weapon drops to show up in the upgrade list in rawr. I'm using the latest version (2.3.10). What's going on?

They likely are not in the default itemcache. You're welcome to add them yourself; takes about 3 clicks.

What might be useful is to be able to select 2 specs and then have rawr optimise towards the best gear set up from your chosen gear to optimise both with a possible item swaps to retain some caps.

Yep, that was it. Added them just now. Didn't even know I could do that, you guys think of everything.

Why is the default itemcache in Rawr usually so outdated? Is that not part of the package that you download from the Rawr website? At first glance, it makes a lot of sense to always be packaging the latest item definitions.

This is already automated. Take a look at documentation for Batch Tools (specifically progressive optimize).

It definitely isn't 'usually so outdated'. There occasionally are some items missing/old, but it's not a lot, and it's not often. The point is that it doesn't have to be perfect, because it's incredibly easy for you to add/update/adjust anything you want.

I always have my gear selected with only 1 gemming option and then when I optimize my arcane spec I just click the override regem option which lets it regem regardless of how many options I gave it.

Is it possible to manually change the length of a CD in rawr? IE changing Combustion to the 2 minute time vs 3 minutes? Or is that an internal coded piece of information?