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[Pre Order] Crucial RAM CT16G48C40U5 16GB DDR5 4800MHz CL40 $165.82 + Delivery ($0 with Prime) @ Amazon UK via AU

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For anyone getting the new Intel 12th Gen Chips. DDR5 ram can be quite expensive but the Crucial 16gb sticks are at $165 on Amazon.

Seems there may be a delay in stock, sold by Amazon UK. Usually dispatched within 1 to 2 months.

Currently on preorder at Scorptec for $219 : https://www.scorptec.com.au/product/memory/ddr5/93235-ct16g4…

Price History at C CamelCamelCamel.

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closed Comments

  • +3

    4800 seems like it'll be very slow for DDR5 as speeds ramp up in time but it's an entry for those who need it, and a good price.

    • +5

      At the moment 5200 is the highest base rate I have found for DDR5 on the market

      • +2

        ddr5 - 5200 is relative to ddr4 - 2600 so this would be relative to ddr4 - 2400

    • -1

      That ram also doesn't have heat syncs I think it will be a while before you see high performance ram with head syncs for DDR 5

      • +2

        True, I think DDR4 started at 2133Mhz to give an indication of what's to come.

        • If I was to buy a new DDR5 supported Mobo and get this ram on release, in say 2 years time when the technology has adapted to become much faster, I'd just be able to swap the new ram in?

          Just curious to see if there's any Mobo limiting factors that may have occurred with DDR4 for example.

          Don't want to build a new computer on DDR5 release and then have to rebuild when I want to swap out for the faster series of RAM.

          • +1

            @JDNE: According to Gigabyte version of Z690, RAM can go up to 6400mhz.

          • @JDNE: Most DDR5 motherboards have support for up to 6400Mhz so you should be fine for the time being. However, DDR5 RAM can theoretically go up to 8400 Mhz (I don't see this happening in the immediate term, 5200-5400Mhz seems to be the sweet spot) so you might need to swap out your mobo to accommate anything over 6400Mhz.

          • @JDNE: Depending on use case, there's greater cost to being an early adopter, but doesn't seem that much advantage:

            Optimum Tech Youtube Comparsion "DDR5 up to 20% Faster vs. DDR4 (don't buy it)"

            https://youtu.be/5wQ9MGrTvwc

          • @JDNE: Example from DDR4, an average Z170 board would top out around 3466/3600, and a high end one will top out around 3866 —- Usually a normal user would likely to experience issue before approaching the upper limit (also depends on how conservative manufacturers are advertising the upper limit)

            The "sweet spot" for DDR4 right now is around 3600/3733/3866, and a "ambient daily" (means you don't need to have a fan blowing into the ram kit after all the crazy OC you have on it, and timings is not ridiculously loose to push high frequency and not worry about actual performance) usually is around less than 4400.

            so if you have a 3600 kit on Z170 it might not even post after enable XMP.

          • @JDNE: Yeah just wait 2 years or so. Also with Intel entering the graphics card world and ethereum mining gradually becomes less profitable, PC building may become affordable in 2 years!

      • RAM typically doesn't require heatsinks.

        • +4

          DDR 5 needs it it runs way too hot.

          • -1

            @kungfuman: And yet here we have DDR5 without heatsinks.

            • @Diji1: yep not running at full speed either. hence why we have underclocked DDR 5 with out heatsinks

              • @kungfuman: Probably one of the dumbest things I've read this week, the clockspeed has literally nothing to do with heatsinks. I know OZB aren't the brightest bunch but heatsinks have no tangible benefit for ram, ddr5 is no different. Also 99% of 'heatsinks' aren't heatsinks and will actually raise ram temperatures, they're just pieces of plastic there for aesthetic. Same goes for nvme heatsinks which are also snake oil.

                • @JerraJones: Hi, Doesn't DDR move the power management onto the RAM board? Hence the necessity for heat dissipation. Quite a change from older RAM types. See the little chips in the centre.

          • @kungfuman: ram doesnt need 'heat syncs' because theyre not heat syncs, they dont just use thermal pads, they use double sided sticky tape with some thermal pad in the middle. removing the heat syncs on ddr4 dropped temps by 5-10c easily. same thing applies here.

            although ram without heatsyncs often means lowend as the heatsyncs are just pure aesthetic

      • heat traps, i mean heat sync make ram hotter not cooler. they are purely for aesthetics

      • +2

        Heat sinks are just marketing devices.

        DDR5 runs at 1.1v. Even DDR3 at 1.5v does not generate enough heat require a heatsink.

        • Finally someone who spelt heat sink correctly or had predictive text off LOL

  • +12

    Who is still using DDR3 in there high end rig and there is nothing wrong with it?

      • I wish my Nana had a high end rig. It would be sick to play co op together.

    • Don't fix things that aren't broken

    • +2

      People are still regularly paying $40+ for 8 (?) year old 2x4gb Corsair Vengeance DDR3 1600mhz used sticks on ebay, it's pretty crazy. More than double that for 2x8gb sticks from the same product line when you could grab new DDR4 3200 mhz sticks for essentially the same price.

      I wish I could say I was surprised, but this market is something else.

      • +1

        For HDD recovery, the cost of a donor drive can be pretty crazy at times.

        Also, you probably live in a metropolitan area. When I sold my DDR3 a couple of years ago (or maybe it was 3 years ago), I noticed the buyer lives in a country area. I'm sure my price was the lowest at the time and I used express post instead (he paid for regular).

        $40 isn't a big deal. Apple is charging ~$260 (based on discounted site price) for 8GB more, $518 for 16GB more.

    • i5 4570 :)

      must say went through 2 motherboards since then though

      HD7970 OC 3GB died too, got RX570 4GB

      May build a new PC in 2-3 years as work paid for laptop with 1660ti

  • +2

    I still use DDR3 and I'm using i5 3rd gen.

    • i5-3470 masterrace powering budget gaming PCs everywhere!

      Still flies through any day to day tasks!

      • +1

        3570K FTW!! Handed it down, still going stroooong!

      • +1

        I7 2600k here, still going strong although some intensive CPU game such as New World are pushing it to the limit. Otherwise any other app/games are fine

  • +1

    CL 40? Wouldn't that be latency and it seems high?

    • +3

      Yes, but latency also decreases as frequency increases, so they usually tend to cancel each other out. Crucial has a good white paper that helps address this myth: https://www.crucial.com/articles/about-memory/difference-bet…. Even though 4800MHz DDR5 has a CAS Latency of 40, and 2133MHz DDR4 has a CAS latency of 15, the DDR5 only has a 2ns higher latency.

    • +1

      The Cas latency is the time that the RAM module takes to address the full memory space.

      It must complete before the next cycle (measured in cycles per second - MHz) begins so CL must increase with Mhz generally speaking.

    • +1

      That was my first thought but I don't know shit so I didn't say anything.

    • It's roughly equivalent to DDR4 3600 cas 14.

      That is pretty good for a baseline generic stick of ram

      DDR5 has about 30% more bandwidth at the same clockspeed as DDR4

  • Missing RGB Heatsinks !

  • ddr5 is such a scamaz rn, until it has matured and we know the rev e / b die of ddr5 its just not worth it. waiting for the adata 12600mhz xmp :)

  • CL40!! I have ddr4 4400 sticks that run at CL18. I Understand you need it for the new 12th gen chips but surely there is ddr5 ram out there with better timings than this.

    • lowest CL I have seen is CL38

    • +1

      You should move back to DDR3 then. CAS latency of 9.

      • +1

        Why not back to DDR1 CAS latency 1.5

    • +1

      Let's compare apples to oranges! my orange is CL18 your apple is CL40 my god how crazy!!!!!!!

  • A lot of RAM experts in this thread!

    • +3

      I'll have you know that I got a ram degree from mail order college

      • My RAMs degree came with a home loan, that I got as an Aries in April. Came with a free ball mount too.

        Are ewe laughing with a sheepish grin ?

        • Nope, I'm laughing with a mosquitoeish grin

    • I will have you know I have been downloading ram for the good part of 10yrs

  • +1

    Am i missing something?

    4800mhz at cl40 = 16.6666666 ns latency
    my b die 4400mhz cl17 = 7.72727272 ns latency

    ? Is latency on ddr5 calculated in a different way?

    • Commonly available "fast" DDR5 is just higher actual-latency than commonly available "fast" DDR4 right now. It'll be a while before it catches up as manufacturing matures etc. Using a top DDR4 kit makes it look extra bad though haha.

    • There are architectural changes that should help make these perform more equally depending on the workload. For example, the 64-bit bus that DDR4 had is now split into two 32-bit buses, so I think that 16ns latency could be effectively halved if you were utilizing a workload that was only able to half fill the bus each cycle with DDR4 (probably not entirely correct, but from performance tests I've seen so far DDR5 seems to benchmark pretty similar to a DDR4 kit with half the latency in some workloads).

    • The calculation is based on theoretical maximum / ideal condition. The problem is with AMD CPUs, you have infinity fabric speed limitation. For Intel, the memory controller is also optimised for certain speed. When you give the CPU a RAM that's way faster than it is generally designed for, it is not able to pump data in the most optimal way to use that faster RAM.

      It's quite likely your B-die 4400 CL17 DDR4 will out perform this DDR5 RAM in most cases, except for applications which can take advantage DDR5 RAM (i.e. 7-zip).

      The problem is that for gaming, the RAM speed really only matters in 1080p or 720p gaming. Even on those cases, the results are mixed. For Intel, it looks like lower CL value (i.e. DDR4-3200-CL14, DDR4-3600-CL16 at lower clock) can beat higher frequencies at higher CL (i.e. DDR4-4400-CL19).

      Honestly, getting RAM modules is something people start to do with AMD Ryzen based systems (because the built in memory controller is picky on RAM). The reality is that the CPU and the GPU matter a lot more (especially the GPU). You can have the fastest system RAM all you want, video cards still need VRAM (GDDR6 or better ideally).

      The main issue with Alder Lake is that if you want some of those high speed I/O features (i.e. Thunderbolt 4, PCIe gen 5 m.2 SSD), going with DDR5 is required as M/B makers are only offering cost effective M/Bs for DDR4 setup.

  • +2
  • Since graphics cards are unattainable at ozbargain prices, we should just wait for ddr5 to become optimised for performance, maybe in 2 years build a system.

  • Good price for a product that is new technology and new to the market, how much was ram when we had the memory shortages. I paid more for my ddr3 ram years after it came out.

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