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AMD Details Ryzen 7000 Launch: Ryzen 7950X and More, Coming Sept. 27th

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Re: AMD Details Ryzen 7000 Launch: Ryzen 7950X and More, Coming Sept. 27th

#61

Post by neogodless »

ksec wrote: post #5

Die Area of only 3.84mm2 for Core + L2. This is a similar to Apple A14/A15. On TSMC N5 although they are likely different variant, optimising for clockspeed rather than Low Power. 13% increase in IPC, and additional clock speed increase as well from N5. The server variant Zen4C with 128 Core per socket should compete fairly well with Ampere ARM variant. I just hope AMD is a little more ambitious than they were and bo…

We'll have to see real world performance and power usage, but their presentation included an estimated ~62% lower power at the same performance as their Zen 3 / 7nm Ryzen 5000 CPUs.

If that's even close to right, that should really start to shine when they have mobile APUs shipping.

Re: AMD Details Ryzen 7000 Launch: Ryzen 7950X and More, Coming Sept. 27th

#62

Post by dispat0r »

Already__Taken wrote: post #52
Tepix wrote: post #49

Earlier quoted context omitted.

The thing i dislike most about the 7600X is it's switch from 65W RDP to 105W RDP, a 61% increase!

it's a bit tone deaf given the energy market

Don't look at graphic cards.

Re: AMD Details Ryzen 7000 Launch: Ryzen 7950X and More, Coming Sept. 27th

#63

Post by neogodless »

joshvm wrote: post #10
neogodless wrote: post #4

Earlier quoted context omitted.

The Ryzen 9 5950x launched just under two years ago at $800. This is an improvement on those prices. The improvements in IPC over the original Zen core of the EPYC 7281 are quite substantial, and AMD is in a much better position than it was those five long years ago.

One downside is that the TDP is almost doubled (170/~230 W vs 105/140 W for default/PPT) which may be a dealbreaker - certainly for my SFF system where I'm not sure I can cope with another 100W. These are limited by the socket really (AM4/AM5), but still it's nice to have that many threads in such a low power budget. I'm more curious to see what the 32-thread competition turns out to be in the same TDP bracket.

Try to think of TDP as "thermal headroom." It's not efficiency or power consumption. It's room for the CPU to speed up when it's necessary. The boost max going from 4.9Ghz to 5.7Ghz (16%), and at the high end, the power necessary to increase clocks ramps up.

In another slide, they indicated ~62% lower power at the same performance levels of the Ryzen 5000 CPUs. So more efficient, but also able to clock higher and get work done faster.

For a thermally constrained system, you won't achieve the absolute maximum performance if the CPU throttles, but you do very much benefit from a more efficient architecture (+13% IPC) and process node.

Re: AMD Details Ryzen 7000 Launch: Ryzen 7950X and More, Coming Sept. 27th

#64

Post by HeadsUpHigh »

neogodless wrote: post #59
Tepix wrote: post #49

Earlier quoted context omitted.

The thing i dislike most about the 7600X is it's switch from 65W RDP to 105W RDP, a 61% increase!

Currently have a 105W 5900X. Opening Visual Studio 2022 saw power consumption as high as about 68W for a blink of a second, but compiling a small web project only drove it to 30W. With my off the shelf Corsair AIO water cooling, it's usually around 35° C. For what it's worth! In powershell, running some python / dbt uses even less power, mostly dipping below 20W. Really takes a lot to make it work hard. I imagine som…

The spike is normal and good, the cpu is supposed to ramp up for a bit to do the work before ramping down.

Re: AMD Details Ryzen 7000 Launch: Ryzen 7950X and More, Coming Sept. 27th

#65

Post by devonkim »

alberth wrote: post #34

Any word on official ECC support? (And I don’t just mean it can use the RAM, I mean for it to gain the actual benefits of ECC)

DDR5 JEDEC specification includes essentially a form of ECC so it may not be _as_ big of a deal for many users. It also means that setups on AM5 will have some level of ECC handling functionality on both the chipset and the CPU.

Re: AMD Details Ryzen 7000 Launch: Ryzen 7950X and More, Coming Sept. 27th

#66

Post by sebazzz »

kcb wrote: post #6

Love that these include a basic igpu. Makes them much more viable for home server and low end desktops(when eventually discounted).

Unfortunately it is quite difficult to build a power-efficient home server as the power consumption of many components is not clear. Take the motherboard for instance, you really have no idea how much is consumed by it. It is reasonable clear for the CPU, but for many other components it is not.

Re: AMD Details Ryzen 7000 Launch: Ryzen 7950X and More, Coming Sept. 27th

#67

Post by wolfgang000 »

digitallyfree wrote: post #8
kcb wrote: post #6

Love that these include a basic igpu. Makes them much more viable for home server and low end desktops(when eventually discounted).

This makes these machines a lot more viable in the business and engineering world as well where CPU performance is desired but graphics is not. I've seen in the past AMD Zen machines paired with say a GT710 simply because it was the cheapest GPU option available that would allow for basic apps and drive two screens.

What a coincidence, that was my setup as well but for my next(now current) pc, I changed it to a Radeon R7 250, (nvidia is fine but dealing with the drivers on linux was a pain in the neck)

Re: AMD Details Ryzen 7000 Launch: Ryzen 7950X and More, Coming Sept. 27th

#68

Post by wtallis »

devonkim wrote: post #65
alberth wrote: post #34

Any word on official ECC support? (And I don’t just mean it can use the RAM, I mean for it to gain the actual benefits of ECC)

DDR5 JEDEC specification includes essentially a form of ECC so it may not be _as_ big of a deal for many users. It also means that setups on AM5 will have some level of ECC handling functionality on both the chipset and the CPU.

The ECC that is standard with consumer DDR5 is purely on-die, protecting the data at rest but not providing any ECC for the memory bus. It's transparent to the host system. As a result, the CPU and other components do not even have the option of participating in that ECC. It's not a substitute for and does not preclude the use of module-level ECC as in previous generations.

On-die ECC also isn't new with DDR5; it's been used for years on at least some LPDDR4 and LPDDR4x memories (eg. https://www.micron.com/about/blog/2017/february/the-advantag...) and even longer for special-purpose DRAM parts.

Re: AMD Details Ryzen 7000 Launch: Ryzen 7950X and More, Coming Sept. 27th

#69

Post by joshvm »

chrismorgan wrote: post #45
joshvm wrote: post #44

Earlier quoted context omitted.

This is true, but there can be advantages to having 32 cores over 16, depending on your workload.

I’m not sure what you’re saying. Both the 5950X and the 7950X are 16 cores/32 threads.

See my original post. I have an SFF case with a water-cooled 5950X+3090. That's already borderline for noise and thermals on a 240mm radiator, so an extra 100 W for the 7950X would probably be untenable. But as people point out - more perf per watt would probably mean cooler performance in a lot of workloads. It'll be interesting to see what the ITX options are for AM5 anyway.

Re: AMD Details Ryzen 7000 Launch: Ryzen 7950X and More, Coming Sept. 27th

#70

Post by digitallyfree »

wolfgang000 wrote: post #67
digitallyfree wrote: post #8

Earlier quoted context omitted.

This makes these machines a lot more viable in the business and engineering world as well where CPU performance is desired but graphics is not. I've seen in the past AMD Zen machines paired with say a GT710 simply because it was the cheapest GPU option available that would allow for basic apps and drive two screens.

What a coincidence, that was my setup as well but for my next(now current) pc, I changed it to a Radeon R7 250, (nvidia is fine but dealing with the drivers on linux was a pain in the neck)

Yeah the commercial installs I've seen with Zen and GT710 are for Windows. For Linux an AMD R7 240 or 430 is the typical choice.
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