The Intel 12th Gen Core i9-12900K Review: Hybrid Performance Brings Hybrid Complexity
by Dr. Ian Cutress & Andrei Frumusanu on November 4, 2021 9:00 AM ESTCPU Benchmark Performance: DDR5 vs DDR4
Traditionally we test our memory settings at JEDEC specifications. JEDEC is the standards body that determines the requirements for each memory standard. In this case, the Core i9 supports the following aligning with those standards:
- DDR4-3200 CL22
- DDR5-4800B CL40*
There's an * next to the DDR5 for a couple of reasons. First, when asked, Intel stated that 4800A (CL34) was the official support, however since the technical documents have now been released, we've discovered that it is 4800B (CL40). Secondly, 4800B CL40 technically only applies to 1 module per 64-bit channel on the motherboard, and only when the motherboard has two 64-bit slots to begin with. We covered Intel's memory support variants in a previous article, and in this instance, we're using DDR5-4800B memory in our testing.
As explained in our SPEC section, DDR5 memory not only brings bandwidth improvements but also the increased number of channels (4x32-bit vs 2x64-bit) means that the memory can be better utilized as threads pile on the memory requests. So while we don't see much improvement in single threaded workloads, there are a number of multi-threaded workloads that would love the increased performance.
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Zzzoom - Thursday, November 4, 2021 - link
You're gullible enough to forget that AMD raised its margins as soon as it got the lead with Zen 3.lejeczek - Thursday, November 4, 2021 - link
And you are ready! to convince everybody... that whole freaking plandemic & communists mafia had nothing to do with prices gone up across the board. Good man!Spunjji - Friday, November 5, 2021 - link
"plandemic"🙄
"communists mafia"
🤦♂️
Qasar - Friday, November 5, 2021 - link
zzzoom, so in other words, intel kept raising its prices when they had the lead, but its NOT ok for amd to raise its prices when they have the lead ? so who is gullible ?amd had the right to raise its prices, after all intel did it.
madseven7 - Saturday, November 6, 2021 - link
You're gullible enough to forget that Intel raised prices for every generation of cpu's and chipsets.karmapop - Thursday, November 4, 2021 - link
This is a market economy. Neither company cares about your emotional attachments or misgivings beyond what is profitable for them. AMD as the market underdog played up that position heavily, gaining significant goodwill with the enthusiast consumer market. However as Zzzoom mentioned just as is expected as soon as they retook the performance dominant position their aggressive pricing strategy evaporated.If you're going to criticize Intel's market stagnation via mismangement for a decade you can't just ignore the fiasco of AMD's awful Bulldozer architecture and the 4.5 year gap between the launch of Piledriver and the launch of Zen 1. It's not unreasonable to make the argument that because Intel absolutely needed AMD to remain around at that time to avoid facing anti-trust issues, the lack of any real competitive alternative is a factor in their decision to stagnate as just 'greed'.
yeeeeman - Thursday, November 4, 2021 - link
AMD has been doing the same starting with Zen 3, so spare me with this...deathBOB - Thursday, November 4, 2021 - link
And they should be punished for correcting those problems?heickelrrx - Thursday, November 4, 2021 - link
AMD did since they make FX series so badStop blaming Intel alon for market segmentation AMD being not competitive also part of it
Spunjji - Friday, November 5, 2021 - link
FX series was as bad as it was for a couple of reasons - partly because AMD were starved of funding during the entire Athlon 64 era, and partly because Global Foundries utterly failed to develop their fabrication processes to be suitable for high-performance CPUs.