Tekkit Keeps Crashing And Lagging

[mastergamer713]

Title: Tekkit Keeps Crashing And Lagging

Version: 3.1.2

OS: Windows XP

Java Version: Java 7 Update 5 32-bit

Description of Problem:

My tekkit keeps crashing and lagging. Is there anyway I can fix this?

Here is my system settings:

CPU 3.00 GHz

RAM 3.00 GB

Graphics Card Memory 128.00 MB of Memory (RADEON X300 SE 128MB HyperMemory)

Hard Drive Space 78.1GB

I really would like to play Tekkit or Reqular Minecraft. Can someone please tell me what is causing Tekkit to crash so much.

Error Messages:

Minecraft Has Run Out of Memory

Error Log:

Failed to write core dump. Minidumps are not enabled by default on client versions of Windows.

[Torezu]

Reduce the amount of memory you allocate to the launcher. Try 1GB first, then 512MB if that still crashes consistently. You will probably need to turn some settings down.

[mastergamer713]

Alright I will try that.

[mastergamer713]

It did not work my tekkit crashes sometimes at the launcher and it crashes after 5 seconds of gameplay.