An AMD Mantle users Testing BF4.

[abundantcores]

There are lots of Mantle Reviews on the net but none of them quite seem to reflect the point of Mantle and what it does.

My experience of those reviews seems typical in that they have a tendancy to use the best 12 thread Intel CPU's overclocked and then set very high in game settings, often also only testing in Campaign mode which has far less CPU implications.

What this does is make the Game completely GPU bound.

Mantle removes or betters CPU bottlenecking, so.
Anyone worth their knowledge knows the way you test for CPU bettlenecks is to run very low GFX setting, this moves the workload away from the GPU onto the CPU.

So with that principle in mind i have done some testing of my own, little of it, but didn't need to to show its effects right away.

So, here we go.

System used:

Motherboard: Asus Sabertooth 990FX, Rev-1.01, BIOS 1503.
CPU: AMD Phenom II x6 1090T @ 4.2Ghz
GPU: Radeon 7870XT (Tahiti LE) @ 1150 / 1575
RAM: Corsair XMS3 4x2GB @ 1600Mhz
SSD Samsung 830
PSU: XFX 750 Watt Pro Edition
Case: CM HAF 912+

Op: Shanghai:
I chose this map immediately as it has a well known CPU bottleneck; all the way down the main dual bridge road. Standing at the very top of the road my results are as follows.

48 Player server, with 40+ players active. (GFX setting = Medium preset @ 1080P)

In DirectX: 57 FPS.



In Mantle: 123 FPS



The performance difference in Mantle is +110% in that scenario.

This does not mean there is a FPS boost everywhere all the time, thats not the case at all.

I play BF4 all the time, since Mantle became available in BF4 i have switched to it and never looked back.
In Direct X my FPS get dragged down by a half regularly, often less than what you see in that screenshot.
With Mantle i'm constantly running roughly around 100 FPS Minimum on all High Settings 1080P. its like night and day.

I have made a couple of Youtube vids to show it in action, keep in mind that what i used to record it, Mirillis Action, reduces the performance by a good 20%.

DirectX

Mantle

 

[el etro]

1090T is bottlenecking this card.

 

[abundantcores]

1090T is bottlenecking this card.

Stand in the same place and watch your FPS, i think you will be very surprised how much your Intel CPU bottlenecks in DirectX

 

[arskatb]

+1 dat wont happend with that amd

 

[natr0n]

I'm waiting for next mantle/driver update.

My 1100t runs the game with no slowdown on any map/mode.

 

[abundantcores]

Ok. this was done on a 4.8Ghz Sandy Bridge i7 and R9 290 xFire x2

All Ultra preset @ 1080P

DirectX: 87 FPS


Mantle: 148 FPS


I beat his 4.8Ghz i7 by a very wide margin in Mantle.

This one was done on a stock 4820K and a GTX 780

60 FPS

 

[m0nt3]

My 1055T at 3.64 would cause a bottleneck at certain points on certain maps, where regardless of settings, i owuld do high 30's to mid 40's in DX. With the new mantle update at Ultra I never see below 60 except for a fraction of a second. Much smoother gameplay, allows me to hold off on CPU upgrade.

 

[Hilux SSRG]

There are lots of Mantle Reviews on the net but none of them quite seem to reflect the point of Mantle and what it does.

Mantle removes or betters CPU bottlenecking, so.
Anyone worth their knowledge knows the way you test for CPU bettlenecks is to run very low GFX setting, this moves the workload away from the GPU onto the CPU.
QUOTE]

Thanks for showing this in the videos and screenshots. Wonder if it would reduce/remove the inherent stuttering of BF4.

 

[abundantcores]

Thanks for showing this in the videos and screenshots. Wonder if it would reduce/remove the inherent stuttering of BF4.

Well, don't just take my word for it, on the bottom left in all the screenshots you will see an overlay, thats measuring the frame consistency, simply compare the DX screenshots to Mantle.

 

[Fluffmeister]

Ok. this was done on a 4.8Ghz Sandy Bridge i7 and R9 290 xFire x2

All Ultra preset @ 1080P

DirectX: 87 FPS


Mantle: 148 FPS

I notice the Mantle screenies still seem a little more washed out to me, maybe it's just me.

Other things like the lamp posts being missing too?

 

[abundantcores]

I notice the Mantle screenies still seem a little more washed out to me, maybe it's just me.

Other things like the lamp posts being missing too?

And the car is crushed on another, the API doesn't change while in game, you have to come out and go back into the server.
The best way to test this is on a very active server, unfortunately while your gone changing the API Lamposts get knocked down, dust moves around, ecte...

 

[Fluffmeister]

And the car is crushed on another, the API doesn't change while in game, you have to come out and go back into the server.
The best way to test this is on a very active server, unfortunately while your gone changing the API Lamposts get knocked down, dust moves around, ecte...

Ah that's fair enough, I don't play the game you see.

Interesting results nonetheless, thanks for posting.

 

[abundantcores]

Ah that's fair enough, I don't play the game you see.

Interesting results nonetheless, thanks for posting.

Ah ok, its a fun game

 

[XSI]

interesting to try 270x with my e8400@3,7 (2 cores 2 threads ) maybe ill have it in 1-2 month

 

[manofthem]

Interesting stuff. I've never tried bf4 on my i3 rig, but I'm going to give it a try and see what comes of it. Actually I don't think the 7770 supports it..... does it?

Edit: just read somewhere that it does so I will give it a try