Project CARS Uses Xbox One eSRAM For Deferred Render Targets, Careful Use Mitigates Some of PS4′s Unified Memory Advantage

Andy Tudor on how they are using the eSRAM of the Xbox One.

Project CARS (11)

Project CARS is one of the most impressive looking racing games out there. If you haven’t seen some of the gameplay trailers out there, then we strongly recommend checking them out. Slightly Mad Studios, the development studio behind this visual splendor is bringing the game to Steam OS, Wii U, PlayStation 4, Xbox One and PC.

We recently got in touch with the creative director of the game, Andy Tudor to ask about his thoughts on the Xbox One’s eSRAM. There has been a lot of confusion regarding its potential and whether it has any sort of an advantage compared to the PlayStation 4′s unified memory.

Andy explained that they are currently using the eSRAM for storing deferred render targets. [It is called deferred since there is no shading performed during the first pass of the vertex and pixel shaders, instead shading is "deferred" until a second pass. Read all about it here]

“Our engine uses a light pre-pass style rendering approach and after experimenting with a number of different variations we found it was more efficient to use eSRAM to hold the deferred render targets. Careful use of eSRAM like this for the various render stages mitigates some of the advantage that PS4 has with its faster unified GDDR5 memory,” he said to GamingBolt.

Project CARS was originally slated to release for the Xbox 360 and PS3. We asked Andy about the desire to bring the game to PS4 and Xbox One users, especially since the install base will still be relatively young by late 2014. He revealed that the sharing feature and the dwindling retail market as one of the reasons of bringing the gorgeous looking game on next gen consoles.

“There were a number of factors that influenced the move… firstly the power of the next-gen consoles allows the game to be showcased as it was ‘meant it to be seen’, the pipeline and architecture of the new machines makes the development process easier, we see the sharing features on both consoles as being extremely engaging for players, the ability to self-publish is appealing, retail space for last-gen games will slowly dwindle over the next year, and also given our timeline for launch there’ll be a better balance of the number of people out there in the mindset for next-gen gaming compared to those still playing their existing consoles. So overall there were a number of contributing arguments that indicated it was the right move to make,” he explained.

Project CARS is due in 2014. Stay tuned to GamingBolt for more about the game in the coming weeks.


  • brianc6234

    That tiny amount of RAM won’t help at all. The PS4 has 8GB of GDDR5 RAM. It’s just way more powerful than the Xbox One in that area.

    • Oxybelis

      Read article: mitigates some of the advantage. It means it’s still inferior. And xbone still has much worse GPU.

    • Aarrggggh

      Slightly positive Xbox article and the SDF are already the ones reading and commenting on it… shouldn’t you be busy playing your PS4s?

    • sazse007

      Ahn… Playing what?

    • Guest

      idiot

    • Crusina .

      They don’t have any good games to play, hence why they are here.

    • Guest

      shitbag

    • Guest

      jackass

    • xxtray90xx

      you dont know what any of these things mean do you?

    • Crusina .

      As an Xbox Person, this is true. While the overclock and CPU is better that’s more or less the only advantage in terms of power.

      It’s true that overall the games will look very similar, but it’s the exclusives that as always will look the best. I look forward to seeing what they both put out!

    • Mike G.

      It all depends on how developers make use of the hardware. Cliche, I know, but true nonetheless.

      Xbox One IPs could look better than Playstation IPs despite the deficit, simply because devs are making better use of what’s afforded them on the Xbox One hardware.

      It’s up to Sony and developers to really make use of the PS4 advantages and I hope they do.

      The Last of Us showed what the PS3 is really capable of when mastered by developers, and it was the underdog the entire generation.

    • GuardiansFan

      in the end its all about the games. the differences won’t be noticeable unless you happen to have a ps4 and xbox one side by side.

      I’ll even go as far as say that the differences between the wii u and the ps4/xbox one won’t be as noticeable this time around as the original wii versus the ps3/360. I saw video showing the ps4 and wii u versions of assasin’s creed 4 and although the ps4 version was better i wouldnt have noticed the difference without seeing the video side by side.

    • Dakan45

      It uses 5gb for games though. and waht you mean “that tiny ram” do you even understand what you read?

    • xxtray90xx

      they understand nothing yoshida say yes we dont have red lights on console and they still believe it

    • mark
    • mistamischievous

      no you idiot yoshida said the red light does not mean red light of death. it just means its overheating not that it has died like the RROD on 360 and the only place a ps4 has been seen to overheat was in a glass case with no ventilation. Xbox idiots on the other hand spreading lies (Major Nelson with his cant just flip a switch comments)

    • Dakan45

      They are pretentious idiots, especailly jack slater believint that magical optimization will allow ps4 to beat pcs, especially now that they use the same architecture and mantle and steam os is coming.

      Sony has lied about many things, but the fanboys exist in a new existance of delussion.

      I have gotten tired correcting them on their missconceptions. Some still belive 8gb of GDDR5 = 8gb to be used at games.

      i am still laughing at how ign posted an article comapring 720p ghosts on xbox one and 1080p on ps4 and everyone was like

      “you can definetly see the diffirence here”

      But then ign apoligized becasue the comparison was prior the patch that made the ps4 version 1080p, it was 720p prior that.

      HAHAHAHHA pretentious lying idiots.

      So when ps4 and ghosts run the unpatched version of cod on 720p they can see imaginery diffirencies when crysis 3 runs on ps3 and x360 UNDER the lowest pc settings, then pc has no diffirence and its the same as the console version and the last of us is graphics king despite every 3rd person shooter game beat it graphically on pc.

      and ofcourse shadowfail is “graphics king”

      Pfff

      Sony fanboys have no idea how graphics and hardware works.

    • Michael Norris

      Sony never said Ps4 will be better then ”High end Pc”Ps4 is more powerful then my current Pc so it is more powerful then a Pc….you understand what i did there.A $600-700USD Pc is technically more powerful, but you have to understand that Pc have bottlenecks that rob much needed performance.Also, the cost is the biggest issues with the console’s no one want to spend more then $500 on a new console just ask Sony.

    • GuardiansFan

      sony lost me on the ps3….i bought a launch day console and had a nice feature i used called “OtherOS” which i lost during an upgrade at some point (or i couldnt play new games) because Sony didnt want to be hacked….and it still got hacked after OtherOS was taken out.

    • Dakan45

      I agree with ps3 is where sony turning into liars and smugs who thought they monopolized the market and could get away with everything, kinda like how ms tried to do now.

      ps2 was by far the greatest console.

      I even heard the crappy architecture was intentional so it is hard to port games from ps3, so they get third party exlusives for free.

      Its sad because psp could use linux.

    • Xtreme Derp

      Mental illness and stupidity defined.

    • Dakan45

      mentally ill fanboy, delusional and always wrong

    • xxtray90xx

      you are retarded

    • Cinnamon267

      8GB with 5, or so, reserved for games. Same with the Xbone. He also said it mitigates SOME of the advantage. Not all. And, even a small amount of memory can make a world of difference. Especially in special use cases like storing render targets. Helps a lot. You’d be surprised.

      “It’s just way more powerful than the Xbox One in that area.” To an extent. Not everything needs super high bandwidth, though.

    • Camile Malono

      Lol way more powerful lol yeah sure thing ps4 is only slightly more powerful lol

    • Michael Norris

      You are a dumb ass…Gpu is a good 50% more powerful with a unified memory architect.All of this with some HuMa support…Sony made a better gaming console.This isn’t Ps3 vs 360,when you had MS build a pure gaming console.Ps4 and Xbone share the same tech just so happens Sony’s machine has more power on tap.

    • Xtreme Derp

      Factual PS4 Hardware Advantages: +6 CUs, +560 GFlops (44% greater), +16 ROPs, +6 ACEs/CQs, better GPGPU support, better performing CPU, and faster unified memory. PS4 OS may also have less overhead or reserves.

      Both Sony and MS have world class coders that will extract every bit of performance out of their consoles with their drivers/APIs/SDKs. The difference is PS4 simply has more powerful hardware to work with, so it will always stay ahead in graphics performance.

      PS4 will have better performing games for the entire generation as it has more powerful hardware, you can’t overcome a hardware gap with better drivers/SDKs.

      Infamous is technically superior in every way. 1080p, 35 fps average (according to DF), open world, next gen visual effects, cutscenes are mostly realtime, etc.

      If you think a 900p, 20 fps average, QTE corridor brawler with copypasted barbarian enemies and CG movie cutscenes “looks better”, that’s your dumb and delusional opinion.

      It’s still a fact PS4′s hardware is superior and its games are technically more advanced as a result.

    • Achmed

      edram/esram is not used as ram, idiot! Its a cache. It can be used for varius things. And don`t forget: PS4 has not 8 GB only for games, idiot! Its only around 4.5 GB for the games. With horrible legacy.

    • Michael Norris

      It’s 5.5GB moron..get your facts right.Don’t try to make Esram sound better then GDDR5 because it isn’t, and it will always hold back games that use a deferred engine”which most games use”.Esram is a bandaid nothing more and everything less.Watch these Sony first party studios push Ps4 to it’s brink.MS does not have the first party support or the hardware to compete with Sony.Enjoy your DVR…

  • Morris ヅ

    sdf think they know it all still lol go play your ps4

  • marc berry

    Why XBOX ONE has the best looking games. 1. It’s full HSA….. 2. AMD’s own words say that HSA is 2.5x more powerful than than the old PC-PS4 architecture.

    • Cinnamon267

      It one 1 game that looks really awesome. The rest are…. kinda OK. Dead Rising is impressive with zombies and Forza, much like GT, can look good in the right circumstances. But, Forza has a lot of aliasing…. and, man, it can make the best looking thing awful.

      Cross-platform stuff is the same, or in Need for Speeds case, kinda weird looking on Xbox One. 95% of it is fine but there is a weird grunge when compared side-by-side. You’d only see it side-by-side.

    • GuardiansFan

      i know the reviews suck on it but Ryse looks amazing…i own it along with dead rising and forza and it is the best looking of the 3 games in my opinion.

    • logic_criticalthinking

      trolololo

    • oddvintagetaco

      AMD makes PS4′s APUs too…

    • Xtreme Derp

      Factual PS4 Hardware Advantages: +6 CUs, +560 GFlops (44% greater), +16 ROPs, +6 ACEs/CQs, better GPGPU support, better performing CPU, and faster unified memory. PS4 OS may also have less overhead or reserves.

      Both Sony and MS have world class coders that will extract every bit of performance out of their consoles with their drivers/APIs/SDKs. The difference is PS4 simply has more powerful hardware to work with, so it will always stay ahead in graphics performance.

      PS4 will have better performing games for the entire generation as it has more powerful hardware, you can’t overcome a hardware gap with better drivers/SDKs.

      Infamous is technically superior in every way. 1080p, 35 fps average (according to DF), open world, next gen visual effects, cutscenes are mostly realtime, etc.

      If you think a 900p, 20 fps average, QTE corridor brawler with copypasted barbarian enemies and CG movie cutscenes “looks better”, that’s your dumb and delusional opinion.

      It’s still a fact PS4′s hardware is superior and its games are technically more advanced as a result.

  • Faisal Munayam

    good news from the devs, i’ll ignore the fanboys

  • watcher278

    That’s why Microsoft added it. They didn’t put it there to make the chips bigger and hotter.

  • Russell Gorall

    I have never heard of this game.

  • You are flat out wrong

    I should hope so. That’s why they put the ESRAM in there, to compensate for the deficiencies of DDR3 only.

    Don’t know how this is news in any way.

  • Guest

    Awww, how cute. The $0N¥ PauperStation desperation is already clear in the comments. Poor paupers…can’t afford anything else but have no games to play so they have to justify on every website that they’re poor,.

  • James

    Ok something alot of people dont understand. Yes the ps4 gpu has more shaders and 32rops but even with its 8gb of gdr5 with all that bandwidth the system doesnt have the bandwidth to use all of its shaders and rops for graphics. That is the honest truth. Also the esram on the xbox one is not a band aid for the lower bandwidth ddr3. The esram is mainly used in the exact way as the edram on the 360. Its main reason for existence is for the frame buffer or render target. The ps4 has to use its 8 gigs of ram for everything including the frame buffer, texture streaming, audio memory, AI etc etc etc. The xbox one is able to use its ddr3 for streaming everything that takes large amounts of space like textures and everything listed above. Then the esram with its high bandwidth low latency takes care of the frame buffer and render targets. Yes sometimes the 32mb may not be enough but thats why they gave developers the abilty to use ddr3 for any target that wont fit in the esram. So yes the Ps4 has a more powerful gpu than the xbox one but because of the bandwidth requirements to use all the shaders and 32rops these systems will be very close in graphical output. Sony put the extra compute units in the ps4 to use for gpgpu in the future. So future ps4 titles should have an advantage in compute intensive tasks like physics, ai and audio ray casting. Visually these systems should be close in output especially on 3rd party titles. You really cant judge either system by launch titles. Both systems have advantages in their designs over the other. The Xbox one has more total bandwidth for gpu than the ps4 but it is divided between the larger ddr3 and the small but fast sram. The xbox one also has 30 gbs bandwidth to its cpu where the ps4 only has 20 gbs. People either dont understand some of these differences or they dont care.

  • Richardo

    Pre-light pass (aka deferred lighting) comes with a penalty. It decreases the potential geometric complexity your games can have because the geometry pass must be done twice. It also increases cpu overhead, decreases transparency render performance and increases cost of Anti-aliasing.

    The great thing is it decreases memory bandwidth requirements and decreases buffer size which is perfect for the ESRAM.

    Not all developers are going to render with pre-light pass but its great they can utilize this technique to negate PS4′s memory subsystem advantages.

  • Phil Balliet

    So many idiots making idiot comments I spent my time reading them all. So much entertainment value in comments alone. :)

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