[alexrybicki]

Something is definitely wrong. I have a i5-2500k and am just using the intergrated graphics (HD 3000). This is the result: (It's actually much better than this now, thanks to updated graphics drivers, and this was made several months ago)

[youtube]q48mOUGV-6A[/youtube]

Try updating java, and make sure that it's 64-bit.
Try updating your video card drivers.
Try forcing a lower rez for rendering.
Optifine?
make sure all of your mods are gone (heh)
It might also be running out of memory, make sure you have java allocated to use more than the default 500MB
update LWJGL
The spikes of lag though sound like a cpu over-run. Does it ever throw an exception? My suspicion is that one of your drivers are out of date. The JVM should be fine and stable...it works for us. It's more than likely it's one of your native drivers messing things up. It might even be something as silly as the sound driver.

[TechnoProdigy]

What I mean is that say I walk up to you and we are not connecting your fps bogs down. Happens all the time when I work in Aquaria.

This has never happened to me. (Rocking a Phenom II X6 1055T @3.71GHz and an XFX Radeon 5770, also overclocked.)

[krystanburge]

Thanks, alex, for your wall of (Helpful) text. I'll be sure to update my driver, etc. Thanks, man! That's probably the issue, see I have a thinkpad x201, and these things should NOT lag on anything except newer, memory intensive games. Minecraft's not that bad. Thanks again!

[Lm108]

Help me at Aquaria Jail, I need your help

[jailbird556]

Help me at Aquaria Jail, I need your help

Traveling is a pain in he a$$ because he nether is really laggy for me. I have sort of been taking a little minecraft break but I will probably be on some time this week.

[Quentijn]

I can tell you that thoe Intel HD cards are not really that good, they are the lower-end cards in laptops. I got a NVIDIA GeForce GT 520M, that's moderate to good FOR A LAPTOP. But compared to the cards that are needed for gaming, it's nothing.