SiSoft Sandra benchmarks
We first take a look at SiSoft Sandra’s Memory Benchmark comparing the Intel Z87 platform to Z77 and AMD FM2.
The Z87 seems to be slightly slower than the Intel Z77 platform when the processors are running at default clock speeds. In fact, when the processor is overclocked to 39 x 105, we see that the memory performance actually drops. Why is that so?
In the Arithmetic test, we again put the Intel Core i7-4770 to the test. As we can see from the chart below, the 3rd generation Core i5-3570K is definitely not a match for the new processor which is also run at 3.4GHz. Something we noticed again is that the when we overclock the processor, the performance dropped instead of rise.
When it comes to the multimedia performance of the processor, the Core i7-4770 is way faster than the Core i5-3570K by almost 2 fold. Scoring 400Mpixel/s, that is amazingly fast. Running the processor at overclocked speed brought down the performance again.
In Transcoding test, the results are just the opposite. We see an increase in score when we overclock the processor, scoring 7.08MB/s while the default scores only 5MB/s
Now, why is it that when we overclock the processor, the performance dropped ? We think that this is largely due to the graphics core clock. On the previous page, we push the MAX CPU Graphics ratio to 28X. This might have given more bandwidth to the graphics unit in the processor and that lowered the arithmetic performance.
It is very apparent that the AMD FM2 with A10-5800K is no match for it’s encoding and processing capability from the results shown above.
Running the graphics test at 1024×768 it was just to show how powerfull is the CPU.
In my opinion the good way would be to run all graphics test at hd resolution at 1280×800,
like in Unigine Heaven. Small resolution with reduced detail is no struggle for a nowadays decent gpu. This CPU-GPU pair from Intel supposed to be one of the first one with “GPU”. And the benchmark just simply missed this point. Make the vga work hard, yes also for the amd counterpart. Let we see what they can do if we go over the word/excel/powerpoint type of works. 100 fps is useless in excel.
Thanks for your response. Regarding Heaven Demo, it is tested in Basic mode which runs 1280×720 to test the internal graphics. Likewise we use the same method to test the AMD APUs e.g. A10-5800K
You ask why performance dropped with overclocking? One word: Throttling. Haswell gets very hot, you need excellent cooling if you don’t want throttling during OC!
You may be right but temperatures were ok. You don’t really need excellent cooling with this processor as 4.1GHz is really nothing compared to the 4770K running 4.7GHz on AIR.
If you look at it, when the BCLK is raised, the other clks like DMI are also affected. In fact, at certain CLK levels>100mhz, the DMI drops below 90Mhz. Don’t forget we applied a ratio to the graphics core. If graphics core is set to default, it might not have affected the processor’s performance.
Why even bother to test the 4770 along side with a i5 3570K.. not really any use since the 3570K is last gen and it is one model down at that too. more appropriate would be to use the i7 3770K as a point of reference for the 4770 as this will give a better review to if Haswell made any significant performance improvements in either processing power, energy savings,and video performance. Between the 3770K and 4770/k it seems more of a video improvement… at least on paper
Sometimes it just happens that you don’t have the processor on hand. You are right the improvement is more on the video and power.