I have a 3.4 ghz quad core with 4gb ram and an HD Radeon 5770 1gb gddr5 card and I get appreciable lag most of the time, so yes, there are coding problems that need to be dealt with.
Yeah... I've had some issues with lag too. There's like... I'd say a very vague choppiness. It's still totally playable, but it just kind of gets annoying. Anyway, it started right after the last update. I'm sure it'll get fixed soon.
I have never seen minecraft running as slow as you guys are describing.
my old pc:
windows XP
512mb ram
intel pentium 4, 2.4ghz
nvidia geforce 5200 fx w/ 256mb dedicated ram
and while using possibly the crappiest system in the world, i had a constant 25-30 fps.
needles to say, however, it runs much better on my new system;
windows 7 64-bit
6gb ram
dual core intel i5 3.20ghz
ati raedon HD 5670 w/ 1gb dedicated ram
Now, the reason I'm posting this is because I've seen some people's posts here describing relatively nice systems that they say cant run minecraft. My guess is that your problem is a software conflict. something else on your system is leeching your performance. one suggestion i have is making the minecraft temp folder an exception to your anti-virus. that can drain performance because your anti-virus will scan the folder every time you load chunks.
temp folder located at:
win7/vista(i think)
C:\Users\username\AppData\Roaming\.minecraft
windows XP
C:\documents and settings\username\Application data\.minecraft
Alternatively, try turning off your on-access protection in your anti-virus, as this will disable the constant scanning of the saves.
my old pc:
windows XP
512mb ram
intel pentium 4, 2.4ghz
nvidia geforce 5200 fx w/ 256mb dedicated ram
and while using possibly the crappiest system in the world, i had a constant 25-30 fps.
needles to say, however, it runs much better on my new system;
windows 7 64-bit
6gb ram
dual core intel i5 3.20ghz
ati raedon HD 5670 w/ 1gb dedicated ram
Now, the reason I'm posting this is because I've seen some people's posts here describing relatively nice systems that they say cant run minecraft. My guess is that your problem is a software conflict. something else on your system is leeching your performance. one suggestion i have is making the minecraft temp folder an exception to your anti-virus. that can drain performance because your anti-virus will scan the folder every time you load chunks.
temp folder located at:
win7/vista(i think)
C:\Users\username\AppData\Roaming\.minecraft
windows XP
C:\documents and settings\username\Application data\.minecraft
Alternatively, try turning off your on-access protection in your anti-virus, as this will disable the constant scanning of the saves.