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AGESA was open sourced in early 2011, aiming to aid in the development of coreboot, a project attempting to replace PC's proprietary BIOS. [1] However, such releases never became the basis for the development of coreboot beyond AMD's family 15h, as they were subsequently halted.
The AMD 4700S and 4800S desktop processors are part of a "desktop kit" that comes bundled with a motherboard and GDDR6 RAM. The CPU is soldered, and provides 4 PCIe 2.0 lanes. These are reportedly cut-down variants of the APUs found on the PlayStation 5 and Xbox Series X and S repurposed from defective chip stock.
AES-NI (or the Intel Advanced Encryption Standard New Instructions; AES-NI) was the first major implementation.AES-NI is an extension to the x86 instruction set architecture for microprocessors from Intel and AMD proposed by Intel in March 2008.
According to an AMD developer's guide, the subsystem is "responsible for creating, monitoring and maintaining the security environment" and "its functions include managing the boot process, initializing various security related mechanisms, and monitoring the system for any suspicious activity or events and implementing an appropriate response". [2]
The string is specified in Intel/AMD documentation to be null-terminated, however this is not always the case (e.g. DM&P Vortex86DX3 and AMD Ryzen 7 6800HS are known to return non-null-terminated brand strings in leaves 80000002h-80000004h [160] [161]), and software should not rely on it.
AMD was the first to introduce the instructions that now form Intel's BMI1 as part of its ABM (Advanced Bit Manipulation) instruction set, then later added support for Intel's new BMI2 instructions. AMD today advertises the availability of these features via Intel's BMI1 and BMI2 cpuflags and instructs programmers to target them accordingly. [2]
On an AMD Ryzen CPU, each of the instructions takes around 1200 clock cycles for 16-bit or 32-bit operand, and around 2500 clock cycles for a 64-bit operand. [ 19 ] An astrophysical Monte Carlo simulator examined the time to generate 10 7 64-bit random numbers using RDRAND on a quad-core Intel i7-3740 QM processor.
Motherboards which feature the at the time new FM2 CPU socket also utilize AMD's at the time new A85X chipset. [ 2 ] The socket is very similar to FM1 , based on a 31 × 31 grid of pins with a 5 × 7 central void, three pins missing from each corner, and a few additional key pins missing.