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CChin40
Beginner
206 Views

Does the Intel Core i7-960 support memory rank interleaving?

If not, what was the earliest generation of Intel Core to support memory rank interleaving?

 

Is there any performance difference between using single-rank or dual-rank memory with the i7-960?

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6 Replies
AlHill
Super User
122 Views

Confirm that this is not a typo, and you are talking about a 1st gen processor, from 2009:

https://ark.intel.com/content/www/us/en/ark/products/37151/intel-core-i7-960-processor-8m-cache-3-20...

 

Doc

 

CChin40
Beginner
122 Views

Correct, not a typo. Looking to upgrade memory on an approx. 10 yr old machine. Both single-rank and dual-rank modules are the same price. Wondering if there is any performance advantage between either SR or DR modules with the 1st gen i7-960.

AlHill
Super User
122 Views

I think you are jumping ahead of yourself. If the processor is upgradeable at all, the manufacturer of the board still defines what memory can be used. So, you must use what the board specifies.

 

Now, upgrading the processor? You must ask the motherboard or system manufacturer what processors are compatible with THEIR BIOS. Then, you can select from those.

 

Personally, for an 11-year old system, I would not bother with such an upgrade. It is not going to do anything for you, and will not be supported by Windows 10.

 

Doc

 

CChin40
Beginner
122 Views

I am not looking to upgrade the processor. I would like to get the extra RAM (going from 12 GB to 24 GB) to support larger data-sets in engineering simulations. The 4 GB DIMMs (to replace the six 2 GB DIMMs) come in single-rank and dual-rank configurations, but are otherwise the same. I get that the performance difference is probably small between SR and DR DIMMs, but it got me thinking. Are single-rank or dual-rank modules better from a performance standpoint? Since the i7-960 has an integrated memory controller, I figured this is a processor question more than a motherboard question. But, I haven't been able to find a clear answer either way regarding the performance trade-offs between SR and DR. I have a feeling any performance benefit of DR over SR is due to rank interleaving. Yet, I'm not sure the i7-960 does rank interleaving. Hence, the question.

AlHill
Super User
122 Views

The type and amount of ram is DICTATED by your motherboard manufacturer.

 

Doc

 

CChin40
Beginner
122 Views

The motherboard can support up to 24 GB, either single-rank or dual-rank. The memory controller (which is on the i7) will dictate whether it can rank interleave, which would theoretically make dual-rank memory perform better than single-rank memory. But, I'm still not sure if the i7-960 memory controller does rank interleaving.
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