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Search took 0.05 seconds. Search: Posts Made By: mackerel
Forum: Hardware 2020-12-07, 23:51
Replies: 83
Views: 8,659
Posted By mackerel
Even without full details, can I take it the CPUs...

Even without full details, can I take it the CPUs were allowed to boost as far as they like? I wonder how it would have looked at fixed clock. What FFT size was tested? I suspect that may be the...
Forum: Hardware 2020-12-05, 12:38
Replies: 6
Views: 433
Posted By mackerel
Rocket Lake seems to be highly inspired by Ice...

Rocket Lake seems to be highly inspired by Ice Lake, and to my understanding the AVX512 implementation is not going to be silicon hogging since it does not offer additional FP64 execution resource...
Forum: Hardware 2020-12-05, 10:50
Replies: 6
Views: 433
Posted By mackerel
Maybe within the execution core area itself, but...

Maybe within the execution core area itself, but I'd think the actual execution capability and effective ram bandwidth will remain the main limiting factors, and there it doesn't look that different...
Forum: Hardware 2020-12-04, 16:35
Replies: 6
Views: 433
Posted By mackerel
Time for a Rocket Lake speculation thread? I'd...

Time for a Rocket Lake speculation thread? I'd caution that if the implementation is single unit, the throughput may be no better than AVX2.
Forum: y-cruncher 2020-12-03, 15:52
Replies: 49
Views: 23,620
Posted By mackerel
Only just saw this, forgot this forum was here....

Only just saw this, forgot this forum was here. Y-cruncher would love as much ram as is needed, but in reality no consumer attainable system can possibly have enough ram for the bigger runs. We're...
Forum: Hardware 2020-11-29, 09:30
Replies: 83
Views: 8,659
Posted By mackerel
I tried the IC pad on Zen 2 (don't recall if I...

I tried the IC pad on Zen 2 (don't recall if I tried it on Intel). I found it slightly worse than a good paste like MX-4 or Kryonaut. For a long term installation I'd still go paste. Pad seems more...
Forum: Hardware 2020-11-08, 20:43
Replies: 83
Views: 8,659
Posted By mackerel
There's a lot of discussion going on elsewhere...

There's a lot of discussion going on elsewhere about ram choice. It seems even for gaming going dual rank or 2DPC is showing a not insignificant difference, but there is a claim that 16GB single rank...
Forum: Hardware 2020-11-06, 10:10
Replies: 83
Views: 8,659
Posted By mackerel
Interesting point. It might not necessarily be...

Interesting point. It might not necessarily be halved due to various changes in the way Zen 3 works, but I take the point that we have more cores hanging off a single pool.

I tried to look around...
Forum: Hardware 2020-11-05, 14:22
Replies: 83
Views: 8,659
Posted By mackerel
Anandtech have some details on the architecture...

Anandtech have some details on the architecture changes relative to Zen 2. FP multiplies don't seem to have any extra units, but what were formerly shown as MUL blocks are now MUL/MAC blocks, with...
Forum: Hardware 2020-10-28, 22:22
Replies: 124
Views: 7,179
Posted By mackerel
The cache is the biggest "new" variable I guess....

The cache is the biggest "new" variable I guess. Be really interesting to see how that works out in non-gaming uses.

I think the 6800 will be positioned above 3070, if you compare their relative...
Forum: Hardware 2020-10-08, 19:40
Replies: 83
Views: 8,659
Posted By mackerel
To check if people heard it the same way I did. I...

To check if people heard it the same way I did. I took that to mean they could dispatch more operations, not necessarily that there was more execution resource. I didn't hear anything to make me...
Forum: Hardware 2020-10-05, 08:30
Replies: 173
Views: 19,473
Posted By mackerel
The demand is great, unprecedented. Stock levels...

The demand is great, unprecedented. Stock levels at launch were comparable to the 20 series. Web traffic was stated as being bigger than black friday. Some will argue how much faster they are (at...
Forum: Hardware 2020-10-03, 14:01
Replies: 26
Views: 3,095
Posted By mackerel
The model mentioned is a consumer one, dual...

The model mentioned is a consumer one, dual channel, no AVX-512.


Probably ram bandwidth limited. Try some other combinations. I'd guess 3 workers of 3 cores each is likely better, even if that...
Forum: Hardware 2020-10-03, 07:22
Replies: 26
Views: 3,095
Posted By mackerel
How many workers were used? At 560k FFT, one...

How many workers were used? At 560k FFT, one worker should fit in CPU cache and not be memory bound, but that FFT is quite small so a large number of cores may be inefficient. On the other end, 10...
Forum: Hardware 2020-09-02, 16:19
Replies: 173
Views: 19,473
Posted By mackerel
How much does VRAM contribute to the final price?...

How much does VRAM contribute to the final price? There is quite a bit of it on there. Maybe not enough to explain all the price, but it will contribute.


The pricing for the nvidia cards are on...
Forum: Software 2020-08-20, 09:23
Replies: 612
Views: 105,289
Posted By mackerel
They way I look at Windows CPU usage reporting is...

They way I look at Windows CPU usage reporting is that it shows the thread usage time, which is not a linear relationship to core usage or throughput when HT is involved.

Consider a 4 core CPU...
Forum: Hardware 2020-08-14, 09:10
Replies: 1
Views: 1,993
Posted By mackerel
Yup, Tiger Lake is mobile only. Now that it has...

Yup, Tiger Lake is mobile only. Now that it has gone to non-inclusive cache, the combined L2+L3 of 4.25MB/core compares close with desktop Zen 2's 4.5MB/core (max core config). Hopefully this is kept...
Forum: Hardware 2020-08-10, 19:34
Replies: 1
Views: 2,072
Posted By mackerel
The section under things it is NOT good at:...

The section under things it is NOT good at: "Workloads bound by memory bandwidth". As far as I can tell it is essentially some kind of SSD and they only claim 2.2GB/s at 70% read/30% writes. At that...
Forum: Hardware 2020-08-07, 16:20
Replies: 31
Views: 5,468
Posted By mackerel
Regardless of the mechanism, I've had both HDs...

Regardless of the mechanism, I've had both HDs and SSDs die on me. As always, best practice is to have backups of any important data so you're ready when it happens, not if.

I'm not an average...
Forum: Hardware 2020-07-30, 08:04
Replies: 7
Views: 3,026
Posted By mackerel
Funnily enough, Boeing's CFO also serves on...

Funnily enough, Boeing's CFO also serves on Intel's board of directors. Intel also have EA's CEO on their board, so many have made jokes around that too.
Forum: Hardware 2020-07-25, 08:53
Replies: 13
Views: 3,908
Posted By mackerel
There are multiple factors that all feed into the...

There are multiple factors that all feed into the overall performance.

For scenarios where the cores are not limited by cache/ram, normalised for cores&clock, Zen 2 is about 5.7% faster than...
Forum: Hardware 2020-07-03, 20:13
Replies: 5
Views: 3,157
Posted By mackerel
I had to ask on another forum, given that GPUs...

I had to ask on another forum, given that GPUs have massive throughput already, why do we need to run these on CPU? The response I got was along the lines of some data sets are simply too large to be...
Forum: Hardware 2020-06-18, 23:19
Replies: 60
Views: 12,012
Posted By mackerel
Sounds like you're describing a full wave bridge...

Sounds like you're describing a full wave bridge rectifier arrangement. While I'm not familiar with worldwide power efficiency standards, I think they've pretty much been consigned for the history...
Forum: Software 2020-06-06, 20:06
Replies: 30
Views: 6,401
Posted By mackerel
I got offered the update on a Haswell-E system,...

I got offered the update on a Haswell-E system, but it hasn't shown up at all on 4 other Skylake or newer systems.

I heard elsewhere there is a known problem if you use Optane Memory Cache. Not...
Forum: Hardware 2020-05-26, 23:25
Replies: 60
Views: 12,012
Posted By mackerel
I'm not aware of a quad core Skylake-X CPU. The...

I'm not aware of a quad core Skylake-X CPU. The range started with the 6 core 7800X, which I used to have. At the time it was current, they were often found cheaper than the consumer 6 core 8700k...
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