Steam Client official minimum system requirements
Where can I find the minimum sys req?

I tried to run it on an Athlon XP, but Steam is crashing due to illegal instruction. I guess SSE2 is needed. Then why is it listed on the hardware survey? I mean if it is a minimum requirement, then of course that 100% of the users have it.

The Linux Client requires SS2 since the beginning, but now it seems that the Windows Client needs it too. In the past, it wasn't required.

HW survey:
https://store.steampowered.com/hwsurvey

Check Other settings at the bottom.
Last edited by Steven Seagull; Feb 20, 2022 @ 10:34pm
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Showing 1-15 of 25 comments
my new friend Feb 20, 2022 @ 10:38pm 
Originally posted by Steven Seagull:
Steam Client official minimum system requirements
Where can I find the minimum sys req?

I tried to run it on an Athlon XP, but Steam is crashing due to illegal instruction. I guess SSE2 is needed. Then why is it listed on the hardware survey?
They took down the page for the requirements a year ago. But you can find some information here.
https://web.archive.org/web/20210729231352/https://support.steampowered.com/kb_article.php?ref=4090-RTKZ-4347
ReBoot Feb 20, 2022 @ 10:41pm 
SSE2 got released almost 2 decades ago.
With that out of the way, it's used to be optional so it used to be listed. Delisting it is an additional piece of work which may or may not pay off.
Steven Seagull Feb 20, 2022 @ 11:24pm 
Originally posted by ReBoot:
SSE2 got released almost 2 decades ago.
That's also true for a lot of games. Why is it needed to have a modern CPU with SSE2 to be able to run a game which requires only a Pentium 1?

Originally posted by ReBoot:
Delisting it is an additional piece of work which may or may not pay off.
Yeah, it must be a helluva work.
ReBoot Feb 20, 2022 @ 11:30pm 
Originally posted by Steven Seagull:
Originally posted by ReBoot:
SSE2 got released almost 2 decades ago.
That's also true for a lot of games. Why is it needed to have a modern CPU with SSE2 to be able to run a game which requires only a Pentium 1?
It's not. If you still got that Pentium box on your desk, use that to play that game.
Steven Seagull Feb 21, 2022 @ 12:14am 
Originally posted by ReBoot:
Originally posted by Steven Seagull:
That's also true for a lot of games. Why is it needed to have a modern CPU with SSE2 to be able to run a game which requires only a Pentium 1?
It's not. If you still got that Pentium box on your desk, use that to play that game.
But it won't start if Steam is not running due to Steam's copy protection.
Steven Seagull Feb 21, 2022 @ 12:17am 
Originally posted by Nebsun:
support for XP ended years ago
Who is talking about Win XP? You can run Windows 7 SP1 without SSE2 if you don't update it.
[N]ebsun Feb 21, 2022 @ 12:18am 
Originally posted by Steven Seagull:
Originally posted by Nebsun:
support for XP ended years ago
Who is talking about Win XP? You can run Windows 7 SP1 without SSE2 if you don't update it.

yup posted before reading everything lol. ignore me
ReBoot Feb 21, 2022 @ 12:48am 
Originally posted by Steven Seagull:
Originally posted by ReBoot:
It's not. If you still got that Pentium box on your desk, use that to play that game.
But it won't start if Steam is not running due to Steam's copy protection.
Since the game in question was released before Steam, you can play it without Steam.
Steven Seagull Feb 21, 2022 @ 1:15am 
Originally posted by ReBoot:
Originally posted by Steven Seagull:
But it won't start if Steam is not running due to Steam's copy protection.
Since the game in question was released before Steam, you can play it without Steam.

False. You can't play Counter-Strike: Condition Zero without Steam.
Last edited by Steven Seagull; Feb 21, 2022 @ 1:25am
ReBoot Feb 21, 2022 @ 1:25am 
Originally posted by Steven Seagull:
Originally posted by ReBoot:
Since the game in question was released before Steam, you can play it without Steam.

False. You can't play Portal without Steam.
Portal doesn't run on a Pentium 1.
Steven Seagull Feb 21, 2022 @ 1:27am 
Originally posted by ReBoot:
Originally posted by Steven Seagull:

False. You can't play Portal without Steam.
Portal doesn't run on a Pentium 1.

OK, actually you can run Portal without Steam by running via hl2.exe -game portal

But then there is Counter-Strike: Condition Zero. Although that doesn't run on a Pentium 1 either, but it runs on a Pentium 3 or on an Athlon XP perfectly well, but since you cannot start Steam if the CPU lacks of SSE2, you can't play it anymore.
ReBoot Feb 21, 2022 @ 1:31am 
Originally posted by Steven Seagull:
Originally posted by ReBoot:
Portal doesn't run on a Pentium 1.

OK, actually you can run Portal without Steam by running via hl2.exe -game portal

But then there is Counter-Strike: Condition Zero. Although that doesn't run on a Pentium 1 either, but it runs on a Pentium 3 or on an Athlon XP perfectly well, but since you cannot start Steam if the CPU lacks of SSE2, you can't play it anymore.
You can't run such ancient systems online anyway, you need an OS getting security patches which Windows XP (which the game is specified for) ain't getting.

And if you're really still got your P3 box with XP on it, you still got the last Steam version supporting XP on it. Pentium 4 got released before Steam did, by the way. If you're really that much into museum-grade hardware, hafe fun. Just don't pretend for Steam to be a useful vehicle for your retro needs.

That, and who the ♥♥♥♥ cares about CZ?
Last edited by ReBoot; Feb 21, 2022 @ 1:34am
Steven Seagull Feb 21, 2022 @ 1:33am 
Originally posted by ReBoot:
Originally posted by Steven Seagull:

OK, actually you can run Portal without Steam by running via hl2.exe -game portal

But then there is Counter-Strike: Condition Zero. Although that doesn't run on a Pentium 1 either, but it runs on a Pentium 3 or on an Athlon XP perfectly well, but since you cannot start Steam if the CPU lacks of SSE2, you can't play it anymore.
You can't run such ancient systems online anyway, you need an OS getting security patches which Windows XP (which the game is specified for) ain't getting.
That, and who the ♥♥♥♥ cares about CZ?

I care about CZ, I want to play it against bots on Windows 7. The PC is restricted to Steam via a firewall, NAT is turned on and it is on a VLAN separated from everything else.
Steven Seagull Feb 21, 2022 @ 1:35am 
Originally posted by ReBoot:
And if you're really still got your P3 box with XP on it, you still got the last Steam version supporting XP on it.

Where? I don't have it. Is it downloadable from the official Steam website? By the way, I'm using Windows 7, CZ runs fine on Win7.
Last edited by Steven Seagull; Feb 21, 2022 @ 3:11am
Matt Feb 21, 2022 @ 1:35am 
Curious what your end goal is? You’ve been talking about this AMD and SSE2 topic since 2017/2018. Are you just trying to run Steam or some games on old hardware for the fun or it?
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Date Posted: Feb 20, 2022 @ 10:32pm
Posts: 25