• We’re currently investigating an issue related to the forum theme and styling that is impacting page layout and visual formatting. The problem has been identified, and we are actively working on a resolution. There is no impact to user data or functionality, this is strictly a front-end display issue. We’ll post an update once the fix has been deployed. Thanks for your patience while we get this sorted.

x2 4600 memory bandwidth problem

S

safe1234

Junior Member
Hi,

OK, I have an asus A8N-SLI premium motherboard with an athlon x2-4600, latest bios, and 2 x 1GB of OCZ.

I had a 4000+ in my system clocked to 2.7 and i got around 6500gb/s memory bandwidth via sisoft sandra.

I inslatted the X2 and the same settings, with the X2 running at 2.7 (each core), and have been prime 95 stable for 24 hours, I only get 5400gb/s with the same settings, I have cool and quiet enabled, but i had that with the 4000+ aswell.

Why is the memory bandwidth so low compared to the 4000+? any help or advice?

I have the memory on 1T, 2.5,3,36, running at 1:1 225mhz.

Any help folks?

Thanks
 
You're running two processors at 2.7 Ghz now, not just one. They're having to share your memory bandwidth, that's all.

edit: Welcome to the forums.
 
Thanks for the welcome, so the fact that they share bandwidth is why its being reported lower in sisoft sandra?

Wow, i didnt think of that, its just that when i have read reviews of the X2's on the web, none i have come across has reported that...

 
So basically, my processor/memory/bios/board combo is fine, and the drop in bandwidth is to be expected?

Is there any disadvantage compared to the fast bandwidth of the single core?

 
When it comes to memory bandwidth, think of adding another core as being simular to using memory dividers. The difference shows up in benchmarks, but it's so small you can't feel it.
 
That's why a dual processor system scores better in memory tests than a dual core system. A dual processor system gives each core it's own memory access.

It's a trade-off, pay more for a dual processor system, or get dual core for a lot cheaper, but take a small hit on bandwith per core.

Don't forget, you haven't lost the 6500 GB/s, it's just that the other core is running a process or two and only needs 900 GB/s to do it.

 
You must log in or register to reply here.

TRENDING THREADS

Back
Top