Here's a realistic set of obtainable, droppable Necro gear. Not value gear and not super high end. But basically as good a set of gear as you could reasonably expect a self-funded Necro to acquire on the way to 60 on Blue's current timeline.
Gatorscale Sleeves: INT: +4 HP: +15
Shimmering Terror Hide Cloak: STR: +4 DEX: +4 HP: +50
Tolapumj's Robe: STR: +5 WIS: +5 INT: +10 MANA: +50
Black Sapphire Electrum Earring HP: +35 MANA: +25
Black Sapphire Electrum Earring HP: +35 MANA: +25
Crystal Spider Eyes: WIS: +3 INT: +3 HP: +35 MANA: +35
Coldain Skin Boots: WIS: +8 INT: +8 MANA: +35
Velium Fire Wedding Ring: HP: +65
Velium Fire Wedding Ring: HP: +65
Coldain Skin Gloves: STA: +9 WIS: +6 INT: +6 HP: +20 MANA: +20
Iksar Hide Cap: WIS: +7 INT: +7 HP: +25
Astral Leggings of the Titans: INT: +10 AGI: +8
Black Sapphire Velium Necklace: HP: +65 MANA: +65
Fancy Velvet Mantle: DEX: +9 STA: +5 INT: +5 MANA: +25
Spider Fur Belt: DEX: +5 AGI: +5 HP: +40
Golden Bracer: STR: +7 INT: +7
Steel Wristband of Strategy: STR: +7 DEX: +7 CHA: -5 INT: +7
Sorcerous Bowl: CHA: -5 WIS: +7 INT: +7 HP: +50 MANA: +10
Rokyls Channeling Crystal: HP: +50 MANA: +50
Sickly Glowing Orb: STA: +5 HP: +60
+INT total for the set: 74 INT
+HP total for the set: 610 HP
+mana total for the set: 380 mana
Human Necro base starting INT is 85, so let's say you dump 25 STA/5 INT. You start with 90 INT, meaning that in this full set of very nice gear you are running around with a whopping 164 INT. Also consider that this list takes advantage of several very nice late P1999 timeline items from Velious and Chardok that would not be available for most of a Green 2.0 timeline. So this is really a best case scenario.
Let's put to bed the idea that "omg INT is easy to cap you should pump STA!". It's pretty much universally terrible advice on every single caster, even Necros and Shaman (with WIS instead of INT) who benefit from a bigger health pool. In every case you are always better off pumping your primary stat at creation and raising your secondary stats with gear.