HD Texture Packs In Minecraft [duplicate]

Question

I was wondering, I have optifine and I can get HD yexture packs but if I get anything over 128x Minecraft crashes. Why is this happening? My computer is very new and has great proccesors and graphics cards. My processor is an intel i7 3,4Ghz and my graphics card is a one of the higher AMD Rathelons and I usually get 200fps with Minecraft. I also have 8GB of RAM.

EDIT: When I use mc-patcher with a 256x256 texture pack I get this error report:

---- Minecraft Crash Report ----
// Would you like a cupcake?

Time: 6/23/13 7:46 AM
Description: Rendering screen

java.lang.OutOfMemoryError: Java heap space
    at bio.a(SourceFile:388)
    at bio.<init>(SourceFile:136)
    at bio.<init>(SourceFile:108)
    at biq.a(SourceFile:127)
    at biq.c(SourceFile:94)
    at bir.b(SourceFile:80)
    at bge.d(SourceFile:350)
    at bge.c(SourceFile:301)
    at bjx.a(SourceFile:146)
    at axt.a(SourceFile:175)
    at bjw.a(SourceFile:109)
    at bfq.b(SourceFile:768)
    at net.minecraft.client.Minecraft.K(SourceFile:597)
    at net.minecraft.client.Minecraft.run(SourceFile:526)
    at java.lang.Thread.run(Unknown Source)


A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

-- Head --
Stacktrace:
    at bio.a(SourceFile:388)
    at bio.<init>(SourceFile:136)
    at bio.<init>(SourceFile:108)
    at biq.a(SourceFile:127)
    at biq.c(SourceFile:94)
    at bir.b(SourceFile:80)
    at bge.d(SourceFile:350)
    at bge.c(SourceFile:301)
    at bjx.a(SourceFile:146)
    at axt.a(SourceFile:175)
    at bjw.a(SourceFile:109)

-- Screen render details --
Details:
    Screen name: bjw
    Mouse location: Scaled: (125, 143). Absolute: (375, 530)
    Screen size: Scaled: (427, 321). Absolute: (1280, 961). Scale factor of 3
Stacktrace:
    at bfq.b(SourceFile:768)
    at net.minecraft.client.Minecraft.K(SourceFile:597)
    at net.minecraft.client.Minecraft.run(SourceFile:526)
    at java.lang.Thread.run(Unknown Source)

    -- System Details --
    Details:
        Minecraft Version: 1.5.2
        Operating System: Windows 8 (amd64) version 6.2
        Java Version: 1.7.0_25, Oracle Corporation
        Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
        Memory: 5540872 bytes (5 MB) / 904527872 bytes (862 MB) up to 954466304 bytes (910 MB)
        JVM Flags: 2 total; -Xms512m -Xmx1024m
        AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
        Suspicious classes: [com.prupe.mcpatcher.MCPatcherUtils, Config, MCLogger, ...], [com.prupe.mcpatcher.mod.ColorizeItem, AAHelper, TessellatorUtils, ...]
        IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
        LWJGL: 2.4.2
        OpenGL: AMD Radeon HD 7570 GL version 4.2.12002 Compatibility Profile Context 9.12.0.0, ATI Technologies Inc.
        Is Modded: Very likely; Jar signature invalidated
        Type: Client (map_client.txt)
        Texture Pack: 1.5TP_HD_By_Lancer_256x256.zip
        Profiler Position: N/A (disabled)
        Vec3 Pool Size: ~~ERROR~~ NullPointerException: null

Answer 1

The problem is that Java is running out of memory:

java.lang.OutOfMemoryError

Even if you've got 8GB in the system, Java can't use it all unless you let it. Right now, Java is only being given the default amount that Minecraft asks for, which is not quite 1GB:

Memory: 5540872 bytes (5 MB) / 904527872 bytes (862 MB) up to 954466304 bytes (910 MB)
JVM Flags: 2 total; -Xms512m -Xmx1024m

That's too little to run a 256x256 texture pack. To give Java more memory, you have to run Minecraft with a command line (in a batch file or script) that changes those memory flags, or use one of the alternate launcher that lets you specify the amount of memory to allocate.

Answer 2

Try using MC-Patcher. Optifine doesn't work to good with some HD texture packs.