| 21. | Tiers 7 and 8 will each have a 256-bit memory bus and will be marketed as 4K gaming.
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| 22. | The memory bus connects the northbridge and RAM, just as the front-side bus connects the CPU and northbridge.
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| 23. | It is also impractical to manufacture a single chip with more than two DDR memory buses ( channels ).
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| 24. | Similar to the memory bus, the PCI and AGP buses can also be run asynchronously from the front-side bus.
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| 25. | Accordingly, Nvidia cut the memory bus to 128 bit on GM107 from 192 bit on GK106, further saving power.
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| 26. | Tier 4, the weakest tier in the 400 series, will lack the RX prefix and feature a 64-bit memory bus.
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| 27. | The memory bus is 40 bits wide, with 32 bits used for data and four bits used to for byte-parity.
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| 28. | Some microcontrollers use a Harvard architecture : separate memory buses for instructions and data, allowing accesses to take place concurrently.
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| 29. | The accelerator board was famous for its high performance due to its 64 bit wide memory bus and PowerPC 604e processor.
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| 30. | It had 128-to 512-bit memory bus which operated at 83 MHz, yielding a maximum bandwidth of 5, 312 MB / s.
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