Wnndows 7 64

[csc]

8 gig( 3.12 usable), is what it says in computer propertys. It should be able to use all 8 gig correct? Is there a gadget or program that shows usable ram? Thanks.

 

[plion]

did you enable "memory remapping" in the bios?

 

[csc]

Shouldnt have to with 64 bit should I?

 

[lxskllr]

Originally posted by: csc
Shouldnt have to with 64 bit should I?

Yup, you need to set that in BIOS

 

[csc]

Oh cool thanx guys. It musta done something cause it killed my overclock but I can now use 8 gig!

 

[Nothinman]

Shouldnt have to with 64 bit should I?

The BIOS remapping is the part that moves the lost memory above the 4G mark. Then you also need an OS that can use memory past that point.

 

[bsobel]

Originally posted by: Nothinman

Shouldnt have to with 64 bit should I?

The BIOS remapping is the part that moves the lost memory above the 4G mark. Then you also need an OS that can use memory past that point.

Well... The BIOS remapping is the part that moves the PCI configuration space above the 4G mark, which results in the 'lost' memory being mappable.

 

[hclarkjr]

i am curious about this, i have 8GB installed on mine and 64 bit vista and have no trouble at all with vista seeing it all. there is no remapping setting in my bios so i am assuming it is on by default??

 

[Nothinman]

i am curious about this, i have 8GB installed on mine and 64 bit vista and have no trouble at all with vista seeing it all. there is no remapping setting in my bios so i am assuming it is on by default??

It must be otherwise you'd be missing some memory.

 

[RebateMonger]

Question:

When re-mapping is done, I assume that there's still "lost" memory, but it's at the top of the memory space (at the top of the 8 GB of memory, for instance)? I've got 8 GB on my Windows 2008 Server and it shows "8 GB", but that could be the same "trick" that Vista SP1 uses to report the full memory size even though some of it is holding PCI stuff and not usable for programs. (i.e. 7.12 GB).

 

[csc]

Originally posted by: RebateMonger
Question:

When re-mapping is done, I assume that there's still "lost" memory, but it's at the top of the memory space (at the top of the 8 GB of memory, for instance)? I've got 8 GB on my Windows 2008 Server and it shows "8 GB", but that could be the same "trick" that Vista SP1 uses to report the full memory size even though some of it is holding PCI stuff and not usable for programs. (i.e. 7.12 GB).

I believe it should use all 8.windows 32 bit does that because it can only handle 4 gig total, this includes vga and all other, hense the missing ram. Windows 64 supports up to 128 gig ram, so it wouldnt be missing ram till you got to 128 gig then you would be missing the vga ram! Right?

 

[Nothinman]

When re-mapping is done, I assume that there's still "lost" memory, but it's at the top of the memory space (at the top of the 8 GB of memory, for instance)? I've got 8 GB on my Windows 2008 Server and it shows "8 GB", but that could be the same "trick" that Vista SP1 uses to report the full memory size even though some of it is holding PCI stuff and not usable for programs. (i.e. 7.12 GB)

No, the whole point of the remapping is to take the lost memory from X-4G and move it above the 4G mark so that it's all usable. I'm not sure if it shifts all of the physical memory up or if it just places the 'lost' memory at the end but either way it should all be usable.

 

[bsobel]

Originally posted by: Nothinman

When re-mapping is done, I assume that there's still "lost" memory, but it's at the top of the memory space (at the top of the 8 GB of memory, for instance)? I've got 8 GB on my Windows 2008 Server and it shows "8 GB", but that could be the same "trick" that Vista SP1 uses to report the full memory size even though some of it is holding PCI stuff and not usable for programs. (i.e. 7.12 GB)

No, the whole point of the remapping is to take the lost memory from X-4G and move it above the 4G mark so that it's all usable. I'm not sure if it shifts all of the physical memory up or if it just places the 'lost' memory at the end but either way it should all be usable.

Right, once you get past 32 address lines there is plenty of room to map in the memory plus the devices without forcing them to overlap 🙂

 

[RebateMonger]

Thanks, guys, for the comments on memory re-mapping. That makes sense. I guess I've been living in a 16/32-bit world for too long.