Forza Horizon 4 PC Graphics Card Performance Comparison And Core Scaling

Sep 29, 2018

The final drivers are ready from both camps and Forza Horizon 4 is out! Well, if you were anxious enough to drop the dough on the Ultimate Edition. Everyone else will have to wait until October 2nd to burn rubber across the British countryside. But, that doesn’t mean we can’t give you a taste of what to expect performance wise from various graphics cards in this title.  We took a look at them demo already for those who are thinking they’re experiencing déjà vu so we aren’t going to spend a ton of time rambling on about the game.

Testing Methodology

Testing the game was a pretty straight forward process thanks to a built in benchmark that is very representative of normal in game performance.  The big catch is this game has a ton of options and quite a few variables so we had to make sure to disable those with each restart and hardware change ultimately settling with the non variable ‘Ultra’ preset. There are settings that will allow you to take things to the extreme, well that’s what they call it anyway, but we’re sticking to a solid preset for today. Testing took place at 1080p, 1440p, and 4k taking the average of 3 runs to account for margin of error, which there was very little between runs. The fact that it is both a UWP title and DX12 means that old world methods of extracting performance beyond what the benchmark spits out at the end.  We incorporated a combination of OCAT and an in house spreadsheet that extracts the Average Framerate as well as the 1% and .1% lows to better represent what the experience is in game. Below we’ve listed the hardware we tested with and the drivers used.

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Test System

Components Z370
CPU i5 8600k @ 5GHz
Memory 16GB Geil EVO X DDR4 3200
Motherboard EVGA Z370 Classified K
Storage Adata SU800 128GB
2TB Seagate SSHD
PSU Cooler Master V1200 Platinum

Graphics Cards Tested

GPU Architecture Core Count
Clock Speed Memory Capacity
Memory Speed
NVIDIA RTX 2080ti Turing 4352 1350/1635 11GB GDDR6 14Gbps
NVIDIA RTX 2080 FE Turing 2944 1515/1800 8GB GDDR6 14Gbps
NVIDIA GTX 1080 FE Pascal
2560 1607/1733 8GB GDDR5X 10Gbps
NVIDIA GTX 1070 FE Pascal
1920 1506/1683 8GB GDDR5 8Gbps
NVIDIA GTX 1060 FE 6GB Pascal
1506/1708 6GB GDDR5 8Gbps
XLR8 GTX 1060 3GB Pascal 1152 1506/1708 3GB GDDR5 8Gbps
AMD RX Vega 64 Vega 10 4096 1247/1546 8GB HBM2 945Mbps
XFX RX Vega 56 Vega 10 3584 1156/1471 8GB HBM2 800Mbs
XFX RX 480 8GB Polaris 10 2304 1266 8GB GDDR5 8Gbps
Sapphire RX 570 Nitro+ 4GB Polaris 20 2048 1340 4GB GDDR5 7Gbps

*NOTE: RX Vega 64 Liquid Cooled is no longer part of lineup, replaced with reference RX Vega 64*

Drivers Used

Radeon Settings 18.9.3
GeForce 411.70




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Coffee Lake Core Scaling


I almost left this one out this go around since we’ve switched to primarily using the Z370 Coffee Lake for our testing since gathering results for the RTX 2080 and RTX 2080ti review but felt it important enough to show the state of core scaling in this game.  Still no support for two threads but interestingly enough with the higher clocked 8600k paired with the RTX 2080ti at 1080p Ultra we start to see some real differentiation between 4 cores and 6 cores.  Sure the averages are within margin of error but we see the minimums take a pounding by losing those other two cores, wonder how a high clocked 8 core might fare in this test.

Conclusion: Radeon Retribution?

So there we have it, final drivers, final build.  Radeon put up an absolute astounding showing of performance on average frame rates across all resolutions when compared to their similar tiered counterparts.  But that’s not without a caveat, the .1% and 1% do negatively impact the overall experience.  On the surface the Vega 56 is toppling the GTX 1080 in averages, but the GTX 1080 carries a tighter spread between averages and lows resulting in a smoother gaming experience, but does lose that advantage at 4k when the more budget friendly option of the RX Vega 56 matches the GTX 1080.  The RTX 2080ti of course brought the highest performance metrics allowing this game to be run at full bore 4k Ultra and even the RTX 2080 never dip below 60FPS, meaning you could tick on that VSYNC option and never miss a beat or worry about jitter or tears, provided you don’t have a 144z 4K G-Sync panel to really soak up this game with.

Either way, the game runs great, and the performance tweak are about for those wanting to crank the frame rates.  Let the green light go, I’ve got a race to win.