gabmass Posted October 17, 2013 Share Posted October 17, 2013 guys I'm planning to buy a system but for the cpu I do have a few options that I need to know whether it's worthy buying it or not. Core i7 - 6 cores 8 MB L3 Cache 12 MB L3 Cache 15 MB L3 Cache the price gap is quite much. Does it really make huge difference in performance between 15 MB and 8 MB Cache CPUs for 3d Works and Vray rendering, suppose the frequency is the same ? is there any 3d and rendering test benchmarks ? Link to comment Share on other sites More sharing options...
AJLynn Posted October 17, 2013 Share Posted October 17, 2013 Which CPUs are you looking at, specifically? They're not sold with a cache size option - e.g., you can't buy a 3930 with 8, 12 or 15MB - and I don't think they have a 6-core i7 with 8MB - so you're probably comparing models that have more differences than just cache size. Link to comment Share on other sites More sharing options...
gabmass Posted October 18, 2013 Author Share Posted October 18, 2013 Ivy Bridge E 22nm i7-4930k / 6 cores / 3.4 GHz / L3 12 MB / 130 W / LGA 2011 / Turbo: 3/?/?/?/?/5 i7-4960x / 6 cores / 3.6 GHz / L3 15 MB / 130 W / LGA 2011 / Turbo: 1/1/2/3/3/4 Sandy Bridge E 32nm i7-3930k / 6 cores / 3.2 GHz / L3 12 MB / 130 W / LGA 2011 / Turbo: 3/3/4/5/6/6 i7-3960x / 6 cores / 3.3 GHz / L3 15 MB / 130 W / LGA 2011 / Turbo: 3/3/4/5/6/6 i7-3970x / 6 coes / 3.5 GHz / L3 15 MB / 150 W / LGA 2011 / Turbo: 2/2/3/4/5/5 Westmere micro-architecture>> Gulftown 32 nm i7-970 / 6 cores / 3.2 GHz / L3 12 MB / 130 W / LGA 1366/ Turbo: 1/1/1/1/2/2 i7-980 / 6 cores / 3.33 GHz / L3 12 MB / 130 W / LGA 1366/ Turbo: 1/1/1/1/2/2 i7-980x / 6 cores / 3.33 GHz / L3 12 MB / 130 W / LGA 1366/ Turbo: 1/1/1/1/2/2 i7-990x / 6 cores / 3.47 GHz / L3 12 MB / 130 W / LGA 1366/ Turbo: 1/1/1/1/2/2 Link to comment Share on other sites More sharing options...
gabmass Posted October 18, 2013 Author Share Posted October 18, 2013 (edited) Which CPUs are you looking at, specifically? They're not sold with a cache size option - e.g., you can't buy a 3930 with 8, 12 or 15MB - and I don't think they have a 6-core i7 with 8MB - so you're probably comparing models that have more differences than just cache size. Oh you're right I didnt notice that. so either 12 MB or 15 MB. so it's kinda easier to decide now, but the price gap between a 12 MB cache and a 15 MB is huge (about $400), compare i7-4930k (3.4 / 12 MB) with 4960x (3.6 / 15 MB ) ! Does 15 MB cache (only 3 MB Extra) make significant improvement in my 3ds max works and rendering time? Edited October 18, 2013 by gabmass Link to comment Share on other sites More sharing options...
numerobis Posted October 18, 2013 Share Posted October 18, 2013 Does 15 MB cache (only 3 MB Extra) make significant improvement in my 3ds max works and rendering time? No. Maybe it's measurable, but you won't notice it. Link to comment Share on other sites More sharing options...
AJLynn Posted October 18, 2013 Share Posted October 18, 2013 The Westmere chips are older models, they're not as fast (at the same GHz) as current ones. Look at the 4000 and 3000 series. (The 4000 is the newer generation and is a bit faster, at the same GHz.) Now look at which models you've chosen. There are K and X models. X models are more expensive by default, and they have features for overclockers that other users won't use. Then there are both cache differences and GHz differences. So you see, the price difference is not just down to an extra 3MB of cache memory. Link to comment Share on other sites More sharing options...
gabmass Posted October 18, 2013 Author Share Posted October 18, 2013 I think with both K and X series, overclocking is possible but I'm curious to know if there are people who have done this successfully and are happy with the result !? do you think I should make a new thread asking about overclocking !? I know it is also highly relative to MB and VGA. also I find it risky ! Imagine your overclocked CPU is rendering for a week to render an animation model. I can't simply trust manual overclocking unless there are official guides ! what do you think ? btw, These CPUs do not have fan in box so I have another problem to solve, now I have to challenge finding out fan differences ! Link to comment Share on other sites More sharing options...
RyderSK Posted October 19, 2013 Share Posted October 19, 2013 I think with both K and X series, overclocking is possible but I'm curious to know if there are people who have done this successfully and are happy with the result !? do you think I should make a new thread asking about overclocking !? I know it is also highly relative to MB and VGA. also I find it risky ! Imagine your overclocked CPU is rendering for a week to render an animation model. I can't simply trust manual overclocking unless there are official guides ! what do you think ? btw, These CPUs do not have fan in box so I have another problem to solve, now I have to challenge finding out fan differences ! It used to be risky 8 years ago when you had to qraphite pencil draw on chips to make this possible in extreme cases :- ) (was fun, I can't remember what was that though, Athlon64?..no idea...) Today,it's breeze, but for paranoid people like me, I still only go for very mediocre (running my 3930k at 4ghz, just because, even though I know everyone is at 4.4-4.5, but meh.. I argument this to myself with stability...) Link to comment Share on other sites More sharing options...
numerobis Posted October 19, 2013 Share Posted October 19, 2013 It used to be risky 8 years ago when you had to qraphite pencil draw on chips to make this possible in extreme cases :- ) (was fun, I can't remember what was that though, Athlon64?..no idea...) Athlon XP I think with both K and X series, overclocking is possible but I'm curious to know if there are people who have done this successfully and are happy with the result !? do you think I should make a new thread asking about overclocking !? I know it is also highly relative to MB and VGA. also I find it risky ! Imagine your overclocked CPU is rendering for a week to render an animation model. I can't simply trust manual overclocking unless there are official guides ! what do you think ? I have overclocked every single CPU i had within the last 15 years, some up to 60%. None of them got damaged. Currently i'm running 9 overclocked i7. It is not risky - if you know what you are doing! And watch your temps. Sure, you can damage the CPU or the board with too high or wrong voltages. But there are many guides you can read and official tables from intel with save voltages. (But no "official" guide for overclocking from intel). And it is not related to the graphics card only in terms of the power draw of the card. So it is only related to the board, the cooling and the PSU (and maybe RAM). You have to invest some time to inform yourself and to do proper and honest stability testing. Link to comment Share on other sites More sharing options...
Dimitris Tolios Posted October 19, 2013 Share Posted October 19, 2013 Cache above a certain amount has small to insignificant benefits. Good example were the i7-3820, a sandybridge EP (Xeon) chip vs. the i7-2600K/2700K, the consumer Sandybridge chips. The 3820 had 10MB cache, the 2600K/2700K had 8MB. In most cases the s1155 "smaller" chips were a tad faster due to other optimizations. Cache, past a certain amount doesn't really affect things - at least for the consumer / desktop applications. It might work a lot more efficiently in a server environment (don't know). Remember, that the cache is actually shared by all CPU cores, so a 3820-10MB with 2.5MB cache/core actually has more than the 3930K with 2MB cache/core. The performance difference per core is untraceable in the workstation workflow. Link to comment Share on other sites More sharing options...
Recommended Posts
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 accountSign in
Already have an account? Sign in here.
Sign In Now