Jump to content

AMD PhysX, how much CPU needed?

pit5000
By pit5000
in CPUs, Motherboards, and Memory
 Share
Posted

As some of us know, PhysX is possible with AMD cards by using the CPU to handle the processing. I'm wondering just exactly how much CPU power is needed to handle those effects at 2.5K, 4K or even 5K resolutions?

 

I have a i5 4570S, will that be enough?

2017 Macbook Pro 15 inch

Link to comment
https://linustechtips.com/topic/60981-amd-physx-how-much-cpu-needed/
Share on other sites
Link to post
Share on other sites
Posted

That is a pretty powerful CPU, give it a try and see what happens.

 

I'm too inexperienced with things like this to give you a decent answer lol

DESKTOP - Motherboard - Gigabyte GA-Z77X-D3H Processor - Intel Core i5-2500K @ Stock 1.135v Cooling - Cooler Master Hyper TX3 RAM - Kingston Hyper-X Fury White 4x4GB DDR3-1866 Graphics Card - MSI GeForce GTX 780 Lightning PSU - Seasonic M12II EVO Edition 850w  HDD -  WD Caviar  Blue 500GB (Boot Drive)  /  WD Scorpio Black 750GB (Games Storage) / WD Green 2TB (Main Storage) Case - Cooler Master 335U Elite OS - Microsoft Windows 7 Ultimate

Link to post
Share on other sites
Posted

As some of us know, PhysX is possible with AMD cards by using the CPU to handle the processing. I'm wondering just exactly how much CPU power is needed to handle those effects at 2.5K, 4K or even 5K resolutions?

 

I have a i5 4570S, will that be enough?

 

PhysX done by CPU is not full, advanced PhysX - won't work the same as with Nvidia GPU, also you take a huge performance hit in some games. Yes the CPU processing is possible with AMD cards, or GeForce cards.

So... If Jesus had the gold, would he buy himself out instead of waiting 3 days for the respawn?

CPU: Phenom II x6 1045t ][ GPU: GeForce 9600GT 512mb DDR3 ][ Motherboard: Gigabyte GA-MA770T-UD3P ][ RAM: 2x4GB Kingston 1333MHz CL9 DDR3 ][ HDD: Western Digital Green 2TB ][ PSU: Chieftec 500AB A ][ Case: No-name without airflow or dust filters Budget saved for an upgrade so far: 2400PLN (600€) - Initial 2800PLN (700€) - Upgraded already: CPU

Link to post
Share on other sites
Posted

A lot of CPU power. They're not the same PhysX as the CPU does not do advanced PhysX. PhysX on CPU is also incredibly unoptimized and is incredibly demanding for such a small return.

 

Typically you would scale down the physX setting or turn it off.

Error: 410

Link to post
Share on other sites
Posted

PhysX done by CPU is not full, advanced PhysX - won't work the same as with Nvidia GPU, also you take a huge performance hit in some games. Yes the CPU processing is possible with AMD cards, or GeForce cards.

Surprise surprise... 

Setup Video -----------Peasant Crushing Specs----------- 4K Benchmarks


-CPU- i7 3930k @4.8GHz 1.4v -Mobo- Asus Rampage IV Extreme -GPUs- 2x GTX Titan Hydrocopper SLI -RAM- 32GB (8x4GB) Corsair Vengeance 1600MHz -Storage- 500GB Samsung 840 SSD | 2TB WD Green HDD


-Monitors- 3x BenQ XL2420T | 1x Dell U2713HM -Mouse- Steelseries Rival -Keyboard- Corsair K70 Cherry MX Brown -Headphones- Audio Techinca ATH-M50 -Microphone- RØDE NT1-A

Link to post
Share on other sites
Posted

Just get Nvidia card :)

| CPU: i7 3770k | MOTHERBOARD: MSI Z77A-G45 Gaming | GPU: GTX 770 | RAM: 16GB G.Skill Trident X | PSU: XFX PRO 1050w | STORAGE: SSD 120GB PQI +  6TB HDD | COOLER: Thermaltake: Water 2.0 | CASE: Cooler Master: HAF 912 Plus |

Link to post
Share on other sites
Posted

Just get Nvidia card :)

 

Agreed. If @OP wants PhysX, no other way.

So... If Jesus had the gold, would he buy himself out instead of waiting 3 days for the respawn?

CPU: Phenom II x6 1045t ][ GPU: GeForce 9600GT 512mb DDR3 ][ Motherboard: Gigabyte GA-MA770T-UD3P ][ RAM: 2x4GB Kingston 1333MHz CL9 DDR3 ][ HDD: Western Digital Green 2TB ][ PSU: Chieftec 500AB A ][ Case: No-name without airflow or dust filters Budget saved for an upgrade so far: 2400PLN (600€) - Initial 2800PLN (700€) - Upgraded already: CPU

Link to post
Share on other sites
Posted

My friend was able to max out PhysX in Batman Arkham City, but that was at 1920x1080 with 3570K and 7970 GHz

 

It probably wasnt full physx but i never tried to test in that particular game.

So... If Jesus had the gold, would he buy himself out instead of waiting 3 days for the respawn?

CPU: Phenom II x6 1045t ][ GPU: GeForce 9600GT 512mb DDR3 ][ Motherboard: Gigabyte GA-MA770T-UD3P ][ RAM: 2x4GB Kingston 1333MHz CL9 DDR3 ][ HDD: Western Digital Green 2TB ][ PSU: Chieftec 500AB A ][ Case: No-name without airflow or dust filters Budget saved for an upgrade so far: 2400PLN (600€) - Initial 2800PLN (700€) - Upgraded already: CPU

Link to post
Share on other sites
Posted

ok if you want to play physx at its best nvidia card

but 

i personally dont see te point in buying another card just to get physx

if it was upgrading and you wanted phsx then buy the nvidia card??

yah

 

you can use physx on your cpu but not/never as good as the nvidia version as it can fully utilize it (i htink cuz of drivers)

Link to post
Share on other sites
Posted

You might be able to run Physx since I have a 4670K and running Physx in Hawken makes me have frame drops and it drops around 35-40fps even though I have a pretty good gpu. But the advanced physx are Nvidia only.

Hello and Welcome to LTT Forum!


If you are a new member, please read the rules located in "Forum News and Info". Thanks!  :)


Linus Tech Tips Forum Code of Conduct           FAQ           Privacy Policy & Legal Disclaimer

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing CPUs, Motherboards, and Memory

×