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Can you comment on the speed grade for the Kintex 7 and if you had actually tested it on a board? I tried a very simple and pipelined design and the best reports timing reports from ISE were around 425 MHz (speed grade -3). For the same design on the Cyclone V (speed grade -6), I got 320 MHz. This design is only about 10% utilization. In a larger design utilizing about 70%, Kintex 7 gets 295 MHz whereas the Cyclone V gets 199 MHz.
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Yes we tested the running hardware and it is bit true. However as project integration is updated from time to time we do get violations which are tackled by either further floor planning or extra pipeline.
The speed grade is in my notes at work and I will let you know on Tuesday as it bank holiday here in UK
We use vivado, not ISE
Honored Contributor
