G.SKILL Trident Z5 RGB DDR5-7200 CL36 2x 24 GB

[ir_cow]

G.SKILL is looking to shake things up with a new high-capacity memory kit! Equipped with a 7200 MT/s XMP profile using modest CL36-46-46-115 timings, G.SKILL is ready to please gamers, steamers and content creators chasing that performance with a side of extra system memory as well. Follow along as we test this memory and see how it stacks up to the competition!

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[damric]

Nice work on those charts on the overclocking part two. Still seeing some performance gains (on Intel at least) and the charts make it a bit easier to visualize the better minimum frames.

 

[bug]

It's bit funny to read "CL36". That's higher* than tRCD on my DDR4 sticks.

*Yes, I understand it's just clock ticks and the actual timing is roughly the same.

 

[rv8000]

Fun kit to play with, its m-die so trfc can’t be brought in much. 7800 c36 achievable on AM5 with roped in timings; requires massive amounts of tweaking.

Same Aida latency results as 6400 c30 manual with the added benefit of +8gb/s read/write; 7600+ (with full manual tuning) should be the same or faster in most games than 6000-6400 when on a dual CCD 7000 chip.

8000 is easily possible, but limited to specific motherboards at this point (tachyon, gene, gb extreme, and maybe the hero/extreme?); bios needs improvements for boot to boot stability.

 

[Frozoken]

Who's tuning these sub timings tho? The tRRD's should both be at 8 and the back to back write timing (tWRWRSG) at 42 is ludicrous, my M die kit at 6666mhz can literally do 9.... This is not anything special btw u just literally have it ~3 whole times higher than it needs to be lol. Another way to tell is the fact that seeing the different group version of the timings is at 8, it'd be quicker to write a random piece of data elsewhere first and then go back and write what was needed rather than using the same group timing bcus it's 8+8 vs 42 cycles

 

[rv8000]

Who's tuning these sub timings tho? The tRRD's should both be at 8 and the back to back write timing (tWRWRSG) at 42 is ludicrous, my M die kit at 6666mhz can literally do 9.... This is not anything special btw u just literally have it ~3 whole times higher than it needs to be lol. Another way to tell is the fact that seeing the different group version of the timings is at 8, it'd be quicker to write a random piece of data elsewhere first and then go back and write what was needed rather than using the same group timing bcus it's 8+8 vs 42 cycles

Kit doesnt do trrdl @8 with that voltage > bsod or fails early into testing. Stability, speed, and reality =\= following timing rules to a T.

Same goes for TWR sub 60 at 7800 & 8000, won’t post or bsod during windows loading.

Also behaves differently from older m-die used on 16gb sticks.

 

[jesdals]

Nice test a good to know that AMD performance dosent scale well asyncronos on DRR5

 

[ir_cow]

Who's tuning these sub timings tho?

Me lol. 12/8 and 16/8 is pretty good for these. Admittedly I didn't change the tWCL or tCKE values and a few others because at a certain point you are dialing in settings for that specific CPU / MB. The biggest impact I would say in the subtimings for gaming is tRRD, tRDRD, tWRRD, tRFC and tREFi. Synthetic benchmarks like y-cruncher, tuning them all down to the limits is best, but serves little purpose to raising those 1% frames. Just my observations.

Kit doesnt do trrdl @8 with that voltage > bsod or fails early into testing. Stability, speed, and reality =\= following timing rules to a T.

Same goes for TWR sub 60 at 7800 & 8000, won’t post or bsod during windows loading.

Also behaves differently from older m-die used on 16gb sticks.

Thank you for explaining. Those who think you can universally copy / paste values for everything are in for a treat

 

[rv8000]

Me lol. 12/8 and 16/8 is pretty good for these. Admittedly I didn't change the tWCL or tCKE values and a few others because at a certain point you are dialing in settings for that specific CPU / MB. The biggest impact I would say in the subtimings for gaming is tRRD, tRDRD, tWRRD, tRFC and tREFi. Synthetic benchmarks like y-cruncher, tuning them all down to the limits is best, but serves little purpose to raising those 1% frames. Just my observations.


Thank you for explaining. Those who think you can universally copy / paste values for everything are in for a treat

Getting 7800 “stable” alone took me at least two weeks (30-40+ hours of tweaking and many, MANY cmos clears), serious memory overclocking/tweaking is not for the faint hearted for sure.

Synthetics will definitely see benefits from this tweaking when it comes to specialized benchmarks, and anything that can take advantage of the increased bandwidth; also requires dual CCD chips and pushing the infinity fabric bandwidth/clocks to make up for 1:2 mode and overcoming the latency penalty.

In the long run its very difficult to call it worth it on AM5, most notably because very few boards can maintain post to post stability at these frequencies currently. I do hope its just a bios limitation, but without more knowledge it could be many things.

 

[ir_cow]

@rv8000 I'm still stuck at 7600 for AM5. I haven't had the time to play around with it more.

 

[rv8000]

@rv8000 I'm still stuck at 7600 for AM5. I haven't had the time to play around with it more.

If you have a gene or tachyon board available those are the easiest avenue to 8000 if theres interest for review/testing purposes.

Most asrock/msi/asus boards dont place nice above 7400-7600.

From my own personal experience 10mv of vddq in the wrong direction, too much vddio, and the wrong balance of vdd vs. vddq = instability. Training seems very spotty boot to boot (un-expose timings settings we may not have access to)

The new m-die 24gb dimms are very easy to work with compared to my a-die and older m-die. Obviously they like looser timings, but this trident Z kit and maybe some of the higher binned kits with the new m-die seem to be an easier route to higher frequencies on AM5, that and gigabyte boards

 

[mechtech]

Nice review.

I guess I am more interested whats the fastest speed one can get at stock voltage (1.1V)? I know ddr4-3200 will run at 1.2V stock. Is there any DDR5-6400 that will do 1.1V out??

 

[rv8000]

Nice review.

I guess I am more interested whats the fastest speed one can get at stock voltage (1.1V)? I know ddr4-3200 will run at 1.2V stock. Is there any DDR5-6400 that will do 1.1V out??

You can probably get away with incredibly loose timings around 1.2-1.25, but the power savings are pointless and you’re killing performance by doing so.

 

[ir_cow]

Nice review.

I guess I am more interested whats the fastest speed one can get at stock voltage (1.1V)? I know ddr4-3200 will run at 1.2V stock. Is there any DDR5-6400 that will do 1.1V out??

I know JEDEC 6400 is coming. 1.1v. Idk the timings though.

JEDEC-standards: 1.1V

4800 - 40-40-40-77
5200 - 42-42-42-84
5600 - 46-46-46-90
6000 - 48-48-48-96
6400 - 52-52-52-103