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Think about it:
Masks  Gloves Stab anyone who gets within 2m "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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And Bane should be hailed as a hero, the guy wore a mask, locked down a city and fought all problems stemming from a bat!
Cheers,
Vikram.
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Why does it take 3 days to come up with the right riposte?
Software rusts. Simon Stephenson, ca 1994. So does this signature. me, 2012
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Wordle 960 4/6*
⬛⬛⬛⬛🟩
⬛⬛⬛🟨🟩
⬛🟨⬛⬛🟩
🟩🟩🟩🟩🟩
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Wordle 960 4/6
⬛⬛⬛⬛⬛
⬛🟨⬛⬛🟩
🟨🟩⬛🟨🟩
🟩🟩🟩🟩🟩
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Wordle 960 5/6
⬜⬜⬜🟨⬜
⬜🟩⬜⬜🟨
🟨🟩⬜⬜🟩
⬜🟩🟩🟨🟩
🟩🟩🟩🟩🟩
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Wordle 960 3/6*
⬜🟨⬜⬜🟩
⬜⬜⬜🟨🟩
🟩🟩🟩🟩🟩
"I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
"Common sense is so rare these days, it should be classified as a super power" - Random T-shirt
AntiTwitter: @DalekDave is now a follower!
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⬜🟨⬜⬜🟩
⬜⬜⬜⬜⬜
⬜🟩🟩🟩🟩
🟩🟩🟩🟩🟩
In a closed society where everybody's guilty, the only crime is getting caught. In a world of thieves, the only final sin is stupidity. - Hunter S Thompson - RIP
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Wordle 960 6/6
⬜⬜⬜⬜🟩
⬜🟨⬜⬜🟩
⬜⬜🟩⬜🟩
⬜⬜🟩🟩🟩
⬜🟩🟩🟩🟩
🟩🟩🟩🟩🟩
Luck 19 
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You still get a consolation prize for making the equivalent of rock n' roll's party on hand gesture . 
Jeremy Falcon
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Wordle 960 3/6
⬛🟩⬛🟨⬛
🟨🟩⬛🟨⬛
🟩🟩🟩🟩🟩
Jeremy Falcon
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Wordle 960 5/6
🟨⬜⬜⬜⬜
⬜⬜🟨⬜⬜
🟨⬜⬜🟨🟩
⬜🟩🟩⬜🟩
🟩🟩🟩🟩🟩
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Wordle 960 4/6
⬛⬛⬛⬛🟨
🟨⬛⬛⬛🟩
⬛🟩🟩🟩🟩
🟩🟩🟩🟩🟩
Ok, I have had my coffee, so you can all come out now!
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On paper AMD Ryzen 5900x has twice horsepower than Intel i5-12400, though in single thread applications, 12400 is lightly better. So we checked this fact by a very simple winform application ( Net 8 - VS 2022 ver. 17.8.4 ):
List<ListViewItem> lv = new List<ListViewItem>();
listView1.Items.Clear();
for (int i = 0; i < numericUpDown1.Value; i++)
{
ListViewItem item = new ListViewItem(i.ToString("D8"));
TestClass t = new TestClass(i);
item.Tag = t;
item.SubItems.Add(t.ID.ToString("D8"));
item.SubItems.Add(t.ID2.ToString("D8"));
item.SubItems.Add(t.ID3.ToString("D8"));
item.SubItems.Add(t.ID4.ToString("D8"));
lv.Add(item);
}
listView1.BeginUpdate();
listView1.Items.AddRange(lv.ToArray());
listView1.EndUpdate();
With
numericUpDown1.Value= 1_000_000
10 times benchmark, Intel cpu completed the task on average in 18 seconds.
AMD cpu never completed the task below 60 seconds.
Intel cpu setup:
Win11 in VirtualBox with 6 cores
16 GB RAM
ADATA NVME 2.0 disk
AMD cpu setup:
bare metal Win11
48 GB RAM
SAMSUNG NVME 2.0 disk.
What's wrong with AMD cpu? Who should we blame on issue: MS or AMD?
Any idea?
P.S.: I'm a hardcore fan of AMD.
Behzad
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Blame it on the Bossa Nova[^]
Sorry it's Saturday and I'm bored.
I'll get my coat
"Ten men in the country could buy the world and ten million can’t buy enough to eat." Will Rogers
PartsBin an Electronics Part Organizer - Release Version 1.3.1 JaxCoder.com
Latest Article: EventAggregator
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It could be a number of things, but the first thing I'd look at is the generated native code and see how it compares for the different architectures. That could make a mountain of difference.
The other things are more difficult to track down, especially with managed code - is your code remaining in the CPU's cache line as its executing?
There's also the other question, and that is Winforms, which relies heavily on the windows subsystem and unmanaged code.
If I were you, I'd fashion a barebones .NET 6+ console application that benches N iterations, 5 times overall where N is some arbitrarily large number based roughly on how long it takes to perform each iteration. Then run that on both and check your results.
Check out my IoT graphics library here:
https://honeythecodewitch.com/gfx
And my IoT UI/User Experience library here:
https://honeythecodewitch.com/uix
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There is something more to the issue that is not apparent from the information provided. As Honey pointed out, there are many other factors to consider.
As for the code itself, it baffles me why you want to load 1M rows into a ListView control like that. You're much better off finding ways to reduce the number of rows loaded. However, if you need to do this, there are better ways like virtualization. Read this (with code sample): ListView.VirtualMode Property (System.Windows.Forms) | Microsoft Learn[^].
If you make this change, the app will run much more efficiently on both machines. 
Graeme
"I fear not the man who has practiced ten thousand kicks one time, but I fear the man that has practiced one kick ten thousand times!" - Bruce Lee
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i agree with honey and graeme
run bench that focuses on hardware performance
I use dhrystone
/*
* "DHRYSTONE" Benchmark Program
*
* Version: C/1
* Date: 12/01/84
* Author: Reinhold P. Weicker, CACM Vol 27, No 10, 10/84 pg. 1013
* Translated from ADA by Rick Richardson
"A little time, a little trouble, your better day"
Badfinger
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It's not a practical application. It should get the attention it deserves.
My first thought was keyboard buffers, repetition counts and reentrancy. But there is no keyboard.
"Before entering on an understanding, I have meditated for a long time, and have foreseen what might happen. It is not genius which reveals to me suddenly, secretly, what I have to say or to do in a circumstance unexpected by other people; it is reflection, it is meditation." - Napoleon I
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I agree. Dhrystone mainly tests integer and character operations, the most common operations.
but it's a clean start.
"A little time, a little trouble, your better day"
Badfinger
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Configure projects to target platforms - Visual Studio (Windows) | Microsoft Learn[^]
An interesting/easy thing to try is building specifically for x86 and x64, testing both.
It's a bit weird this isn't inverted. (x64 = AMD instruction sets, afaik - even on Intel chips)
Aside that, I think strings being a bit of a special animal is likely playing into this heavily.
Also, setting a .Tag to an object (instead of a string) is "weird" but that weirdness may be a figment of my imagination and that may be a perfectly normal thing to do.
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I just finished writing a source generator for my Visual FA project that lets you easily define lexers which it will then implement for you.
The same day, it turns out I needed a lexer for work in order to parse a C header and make a CSV out of particular data in it.
This isn't the first time something like that has happened to me, and it never gets old.
Check out my IoT graphics library here:
https://honeythecodewitch.com/gfx
And my IoT UI/User Experience library here:
https://honeythecodewitch.com/uix
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Yeah, I hear that.
Boss: We need a tool which will blah blah blah...
Me : You mean like my [insert name of utility]...?
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PIEBALDconsult wrote: Me : You mean like my [insert name of utility]...?
Exactly! Ah, the number of times that has happened, it's so sweet, lol.
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Yes. I realized I had a pretty decent "geometry" library; just when I though I had to write some (more). Just needed to put them all in the same namespace / mindspace.
"Before entering on an understanding, I have meditated for a long time, and have foreseen what might happen. It is not genius which reveals to me suddenly, secretly, what I have to say or to do in a circumstance unexpected by other people; it is reflection, it is meditation." - Napoleon I
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