PCTuning fórum

del42sa píše:L1 cache 3 cycle latency ( BD/PD 4 cycles )

Cache Structures
• 16-Kbyte 4-Way Associative, Write-through ECC-Protected L1 Data Cache per Core
• Two 64-bit operations per cycle, 3-cycle latency
• 64-Kbyte 2-Way Associative Parity-Protected L1 Instruction Cache Shared between Two Cores
• With advanced branch prediction
• 20481 -Kbyte Maximum 16-Way Associative ECC-Protected L2 Cache Shared between Two Cores
1 2048 Kbytes of L2 cache per compute unit are available on quad-core options, and 1024 Kbytes of L2 cache
per compute unit are available on dual-core options.
• Exclusive cache architecture storage in addition to L1 caches

The relationship between the L1D and L2 caches also simplifies reliability. Since any data written by the L1D is also present in the L2, parity is sufficient protection for the L1; any errors can be fixed by reloading from the ECC protected L2 (or L3/memory). As a result, ECC is no longer required for the L1D (as it was for Istanbul), which reduces the power consumption for stores. In Istanbul, any store to a cache line had to first read to get the ECC, then recalculate the ECC with the new data and then finally write to the cache.

Including support for SSE, SSE2, SSE3, SSE4a, SSE4.1, SSE4.2, SSSE3, ABM, AVX, AVX1.1, AES,BMI, XSAVE/XRSTOR, XGETBV/XSETBV, PCLMULQDQ, FMA, FMA4, TBM, XOP, MMX™, and legacy x86 instructions

Kumar, a 28-year AMD veteran, had been standing in as CFO since AMD announced the departure of Thomas Siefert.

In exclusive we have the detailed first specs (not final) for PS4, most likely first alpha kits sent to developers:

TLDR SPECS

CPU

4 core (2 core pairs) 3.2 GHz AMD x86 (Steamroller)
aggregate, 10x PS3 PPU performance
512 KByte L2 per core pair
64 bit pointers

GPU

AMD R10x series GPU @ 800 MHz (Tahiti)
aggregate 10x RSX performance, 1.84 TFlops
DX”11.5″
cheap branching
18 compute units, focus on fine grained compute & tessellation

MEMORY:

2 GByte UMA, pushing for 4 GByte
192 GByte/ sec non-coherent access for e.g. GPU
12 GByte/ sec coherent access for CPU
>50% longer memory latency for CPU/ GPU compared to PC!!!
DXT is lowest bpp texture compression format

MEDIA:

50 GByte BD drive
PCAV, between 3.3 and 8x BD, most likely clamped to 6x
automatic background caching to HDD
HDD SKU with at least 380 GByte
downloadable games

EXTRA HARDWARE:

video encoder/ decoder
audio processing unit, ~200 concurrent MP3 streams
HW zlib decompressor

Our source claims that the final specs should be 10x powerful than PS3, due to this info has got 10 months.

del42sa píše:je tohle nový X-Box ?

GlobalFoundries is expected to design some 20nm and 14nm for AMD and let’s hope that both AMD and GlobalFoundries will have better luck with 20nm products.

We met several AMD executives at CES and they told us that with 32nm Richland, 28nm Temash and Kabini, things should start to look better for the company. Basically it looks like 2013 will be a much better year for AMD, which is not a surprise as it could hardly do worse than it did in 2012 and this is the general feeling of many AMD executives as well as some major partners.

del42sa píše:je tohle nový X-Box ?