I know that if you do proper research on the internet you can find this too, but I thought I'd just post here in the guide section how much the gain is per Artifact Knowledge level. It can stack up to 25.
These levels apply to ALL of your artifacts, even the new ones you haven't obtained yet. The only exception is the Fishing Artifact, which cannot gain any Artifact Knowledge at all, and will continue to give 50 Artifact Power per rare fish. I hope this helps a few souls.
- 01 <-> 25 %
- 02 <-> 50 %
- 03 <-> 90 %
- 04 <-> 140 %
- 05 <-> 200 %
- 06 <-> 275 %
- 07 <-> 375 %
- 08 <-> 500 %
- 09 <-> 650 %
- 10 <-> 850 %
- 11 <-> 1,100 %
- 12 <-> 1,400 %
- 13 <-> 1,775 %
- 14 <-> 2,250 %
- 15 <-> 2,850 %
- 16 <-> 3,600 %
- 17 <-> 4,550 %
- 18 <-> 5,700 %
- 19 <-> 7,200 %
- 20 <-> 9,000 %
- 21 <-> 11,300 %
- 22 <-> 14,200 %
- 23 <-> 17,800 %
- 24 <-> 22,300 %
- 25 <-> 24,900 %
As for Artifact Power needed per next rank / trait / upgrade, please check out this spreadsheet:
Artifact trait level Power required to reach next level Total power required to reach this level % of total power to reach this level % of total power, not including paragon points to reach this level
1 100 - 0.0000% 0.00%
2 300 100 0.0002% 0.00% I use the term paragon points to be the points that incease max hp, damage, or healing depending on spec. These are intended to be AP sinks generally for single spec play, or late expansion.
3 325 400 0.0006% 0.01%
4 350 725 0.0011% 0.01%
5 375 1,075 0.0016% 0.02%
6 400 1,450 0.0022% 0.03%
7 425 1,850 0.0028% 0.04% Numbers were pulled from : http://beta.wowdb.com/artifact-calculator
8 450 2,275 0.0035% 0.04%
9 525 2,725 0.0042% 0.05%
10 625 3,250 0.0050% 0.06%
11 750 3,875 0.0059% 0.07%
12 875 4,625 0.0071% 0.09%
13 1,000 5,500 0.0084% 0.11%
14 6,840 6,500 0.0100% 0.12%
15 8,830 13,340 0.0204% 0.26%
16 11,280 22,170 0.0340% 0.43%
17 14,400 33,450 0.0513% 0.64%
18 18,620 47,850 0.0733% 0.92%
19 24,000 66,470 0.1019% 1.27%
20 30,600 90,470 0.1386% 1.73%
21 39,520 121,070 0.1855% 2.32%
22 50,880 160,590 0.2461% 3.08%
23 64,800 211,470 0.3241% 4.05%
24 82,500 276,270 0.4234% 5.30%
25 105,280 358,770 0.5498% 6.88%
26 138,650 464,050 0.7111% 8.90%
27 182,780 602,700 0.9236% 11.55%
28 240,870 785,480 1.2037% 15.06%
29 315,520 1,026,350 1.5728% 19.68%
30 417,560 1,341,870 2.0563% 25.73%
31 546,000 1,759,430 2.6962% 33.73%
32 718,200 2,305,430 3.5329% 44.20%
33 946,660 3,023,630 4.6335% 57.97%
34 1,245,840 3,970,290 6.0841% 76.12%
35 1,635,200 5,216,130 7.9933% 100.00%
p1 1,915,000 6,851,330 10.4991% 131.35%
p2 2,010,000 8,766,330 13.4337% 168.06%
p3 2,110,000 10,776,330 16.5138% 206.60%
p4 2,215,000 12,886,330 19.7472% 247.05%
p5 2,325,000 15,101,330 23.1416% 289.51%
p6 2,440,000 17,426,330 26.7044% 334.09%
p7 2,560,000 19,866,330 30.4435% 380.86%
p8 2,690,000 22,426,330 34.3665% 429.94%
p9 2,825,000 25,116,330 38.4887% 481.51%
p10 2,965,000 27,941,330 42.8178% 535.67%
p11 3,115,000 30,906,330 47.3614% 592.51%
p12 3,270,000 34,021,330 52.1349% 652.23%
p13 3,435,000 37,291,330 57.1459% 714.92%
p14 3,605,000 40,726,330 62.4098% 780.78%
p15 3,785,000 44,331,330 67.9341% 849.89%
p16 3,975,000 48,116,330 73.7343% 922.45%
p17 4,175,000 52,091,330 79.8257% 998.66%
p18 4,385,000 56,266,330 86.2236% 1078.70%
p19 4,605,000 60,651,330 92.9432% 1162.76%
p20 - 65,256,330 100.0000% 1251.05%
It also shows how much Artifact power you'll have spent in total, as well as the stamina gain in percentage.
Edit: It is worth noting that Artifacts Tokens you have previously picked up prior to learning a new Artifact Knowledge rank, will NOT scale.
So there is absolutely NO GAIN in saving them up for higher Artifact Knowledge.