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AMD Ryzen 7 9800X3D
- Thread starter Hostile_18
- Start date
1pm window for me. 
Soldato
Soldato
If I was buying new I wouldn't buy anything less than the x870. I believe only the x870 and the x870e have support for the latest interfaces. I don't see the point in buying a new mobo (especially if I'm getting a 9800x3d) and not have one with pcie 5 for example.
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From what I've been reading 6000 is the sweet spot for price to performance but I'm not particularly fussy
X670e mostly had better layouts and less compromises IMO, especially if you value NVMe.
Best performing memory for a 3D processor is to keep the divider on 1:1, as such faster memory beyond 6200MHz is pointless on AMD platform.
Best efficiency is achieved with a 1:1 divider which is around 6000-6200MHz C28-C30 memory, my advise is save your money and buy a 6000MHz C30 kit, this will give best performance, if you want a little more try overclocking the kit towards 6200MHz or further tightening the timings down to C28.
Best efficiency is achieved with a 1:1 divider which is around 6000-6200MHz C28-C30 memory, my advise is save your money and buy a 6000MHz C30 kit, this will give best performance, if you want a little more try overclocking the kit towards 6200MHz or further tightening the timings down to C28.
I was looking at Gigabyte again, have had great value from my x570 Aorus master, but the reported VRM temps on the Gigabyte Eagle were noticeably higher (HW unboxed x870 round up, but still well within spec) and wanted to avoid lane sharing as much as possible so went with MSI MPG Carbon instead.
MSI MPG X870E CARBON WIFI (Socket AM5) DDR5 ATX Motherboard
Order MSI MPG X870E CARBON WIFI (Socket AM5) DDR5 ATX Motherboard now online and benefit from fast delivery.
www.overclockers.co.uk
Caporegime
To further clarify on that, only dual CCD parts generally see benefit in 1:2 mode, and you need to run at least 7800Mhz or higher for it to be worthwhile. Single CCD parts don't see any real benefit, so stick with 1:1 mode.Best performing memory for a 3D processor is to keep the divider on 1:1, as such faster memory beyond 6200MHz is pointless on AMD platform.
Best efficiency is achieved with a 1:1 divider which is around 6000-6200MHz C28-C30 memory, my advise is save your money and buy a 6000MHz C30 kit, this will give best performance, if you want a little more try overclocking the kit towards 6200MHz or further tightening the timings down to C28.
The optimal for single CCD is 6600Mhz memory and 2200Mhz FCLK, but not all samples will be able to hit that. Both of mine can though.
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I thought I read somewhere that we have no hardware current or even on the horizon that is capable of saturating PCIE 4, let alone 5. That's ultimately why I just went for a B650E. It does have PCIE5 but I personally wouldn't find any value in these top end boards. Perhaps I'm missing something though?
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Soldato
That may be true. But surely the next gen gpus are going to be pcie5. Whether or not they are fast enough to saturate pcie4 for me is not the point.
I would want a pcie5 board for my brand new pcie5 GPU.
This is one reason why I wouldn't buy a RTX 5000 card. I wouldn't want to pair it with a 5800x3d on a x570 board. Just doesn't feel right.
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You're not missing anything - you have it right. PCIE 5 isn't essential for anyone at this point in time. And even if you want that for "future proofing", many B650E, X670 and X670E mobos include that feature. For example, my MSI Carbon X670E has 4 x Gen 5 M2 slots and supports PCIE 5. I could upgrade to the X870E equivalent if I wanted USB4, but hardly critical.
I take it the 2200 FCLK is necessary to overcome 1:2 ratio latency? Is 6600/2200 then the baseline at which 1:2 becomes better than 1:1?To further clarify on that, only dual CCD parts generally see benefit in 1:2 mode, and you need to run at least 7800Mhz or higher for it to be worthwhile. Single CCD parts don't see any real benefit, so stick with 1:1 mode.
The optimal for single CCD is 6600Mhz memory and 2200Mhz FCLK, but not all samples will be able to hit that. Both of mine can though.
Caporegime
8000/2000 should be good, but yeah generally. Test 8000/2000 vs 8000/2200, but i would expect 2200 to be faster if stable. 7800Mhz is the baseline i think for where 1:2 can start to compete with 6400 1:1. 8000+ for 6600 1:1. That's all for dual CCD only.
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Main reason to buy a more expensive board might be for ram and layers of the mboard for signal integrity.
other than that its only if you actually needs a feature.
I sit with a gen one b650 asus board and are likely to keep it trough zen 6 even.
i wait for bioses to be stable for zen5 9800x3d then later upgrade to one as I am not a fan to adjust my ram settings again with a new bios.
Ram speed is not important either, the difference in playing games is nonexistent.
ltmatt cant know which computer has faster or slower ramspeed if he set up two computers playing the same game.
if the game you play usage x3d its just works better
6600 is 1:1, no?
I was playing around with my 7800X3D today before I get my 9800X3D.
Managed to get it (Trident Z5’s) to boot at 6000CL24 GDM disabled at 1.7v (active cooling) Some errors, but wonder if I can get it stable at 1.75/1.8v. But I could 100% get 6000CL26.
Would 6000CL24/26 be preferable to 6400/6600 with a higher CAS?.
This is all assuming my 9800X3D IMC is as good, or better, of course.
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Associate
- Joined
- 24 Nov 2018
- Posts
- 73
I like buying for the future so I went with a X870 over the B650. I had my eye on the Gigabyte B650M Aurus Elite because it would fit in my existing case, but at £165 with no USB 4, WiFi 7 or PCIE 5 for GPU it didn't really seem like good value to buy now. I went with the MSI X870 Tomahawk instead and am getting a new case it has 8 layer PCB, WiFi 7 Ultra wide 320Mhz, 5GBE LAN as well as very good lane management. I hope it will last me until 2nd generation of AM6 so like 5-6 years. I don't upgrade very often.
Bare in mind I'm a novice when it comes to overclocking. Can I put this in eco mode with no loss of gaming performance? (Or maybe even a boost because it's running cooler). I did that with my 7600x and it was great.
Oh, I thought above 6400 was automatically set to 1:2, thanks helpful!
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