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--- blog:286_shootout_eurosoft-ht12 [2021/02/17 21:23] – [Results] john
+++ blog:286_shootout_eurosoft-ht12 [2021/02/17 21:43] (current) – [Speed Testing & Tuning] john
@@ Line 293: / Line 293: @@
    * VGA 1 Tseng Labs ET4000AX 1MB VGA
-I experienced a couple of crashes at 24MHz clock speed. This is likely to be the absolute outer limits of stability for the chipset and board. FPU, CPU and RAM were all warm but not hot to the touch, so I suspect just a timing limit of the HT12 chipset.
+I experienced a couple of crashes at 24MHz clock speed. This is likely to be the absolute outer limits of stability for the chipset and board.  Even so, you probably wouldn't want to run at 24MHz. FPU, CPU and chipset were all warm but not hot to the touch; RAM was very warm, so it could either be chipset performance limitations or even RAM on the border of being stable. Perhaps it is worth cooling the RAM to see if it operates any more stable?
 Note that the Comptest and CheckIt VGA results are incorrect in the above screenshots due to user error (I forgot to re-enable VGA BIOS shadowing). They are correct in the results table below.
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 {{:blog:img20210127162050.jpg?200|}}{{:blog:img20210127161907.jpg?200|}}{{:blog:img20210127161902.jpg?200|}}{{:blog:img20210127161848.jpg?200|}}
-{{:blog:img20210127161838.jpg?200|}}
+{{:blog:img20210127161838.jpg?200|}}{{:blog:img20210217205330.jpg?200|}}{{:blog:img20210217205427.jpg?200|}}{{:blog:img20210217205447.jpg?200|}}
+{{:blog:img20210217205530.jpg?200|}}{{:blog:img20210217205603.jpg?200|}}{{:blog:img20210217205609.jpg?200|}}
 **VGA 2**
+{{:blog:img20210217210428.jpg?200|}}{{:blog:img20210217210507.jpg?200|}}{{:blog:img20210217210541.jpg?200|}}{{:blog:img20210217210610.jpg?200|}}
+{{:blog:img20210217213246.jpg?200|}}{{:blog:img20210217213334.jpg?200|}}{{:blog:img20210217213419.jpg?200|}}{{:blog:img20210217213438.jpg?200|}}
 I wasn't able to complete //any// benchmarks with the ET4000 fitted at this 24MHz processor speed.
+**[Update 17/02/2021]** - I found that with a couple of specific SIMM modules and running the system from cold, it will run long enough to complete all the benchmarks, so the results below have been updated for the full set of 24MHz tests.
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@@ Line 350: / Line 358: @@
 | CheckIt Whetstones @14.318MHz    | 690.1K| 682.2K      | 921.6K   | 1102K    | 1100.8K |
 | CheckIt Video chars/sec VGA 1| 6816      | 8860        | 11311     | 13632   | N/A |
-| CheckIt Video chars/sec VGA 2| 6995      | 9166        | 11557     | N/A      | 11311 |
+| CheckIt Video chars/sec VGA 2| 6995      | 9166        | 11557     | 13990   | 11311 |
 | CheckIt HDD Transfer   | 1045KB/sec      | 1071KB/sec  | 1223KB/sec| 1396KB/sec|
 | Landmark CPU           | 17.79MHz        | 23.99MHz    | 30.26MHz | 36.78MHz  | 28.06MHz |
@@ Line 358: / Line 366: @@
 | Landmark Video VGA 2   | 5015.51         | 5015.51     | 6342.19  | 7680     | 7992.20 |
 | 3DBench VGA 1          | 4.9       | 5.9         | 7.3      | 8.9      | N/A |
-| 3DBench VGA 2          | 5.2       | 6.4         | 8.1      | N/A         | 8.4 |
+| 3DBench VGA 2          | 5.2       | 6.4         | 8.1      | 9.9      | 8.4 |
 | ATPerf RAM Read        | 1         | 0           | 0        | 0        | 1 |
 | ATPerf RAM Write       | 1         | 0           | 0        | 0        | 0 |
@@ Line 369: / Line 377: @@
 | CompTest MFLOPS @14.318MHz | 0.062 | 0.064       | 0.081    | 0.098   | 0.099 |
 | CompTest Video BIOS VGA 1  | 28717 | 37759       | 47537     | 57642  | N/A |
-| CompTest Video BIOS VGA 2  | 26995 | 35564       | 45026     | 19688  | 43388 |
+| CompTest Video BIOS VGA 2  | 26995 | 35564       | 45026     | 54483  | 43388 |
-| CompTest Video Direct VGA 1| 10204 | 12987       | 16393     | 54483  | N/A |
+| CompTest Video Direct VGA 1| 10204 | 12987       | 16393     | 19688  | N/A |
 | CompTest Video Direct VGA 2| 10989 | 14085       | 17857     | 21739  | 17544 |
 | CompTest Dhrystones    | 3069.4    | 4077.6      | 5187.5   | 6272.3   | 4947 |
@@ Line 380: / Line 388: @@
 ^ Test                 ^  Config 0  ^ Config 1  ^ Config 3  ^ Config 4  ^ Config 6  ^
 | Wolfenstein 3D (FPS) |  9.2       | 11.6      | 14.8      | 17.8      | 11.4      |
-| F1GP Bench 1 (CPU %) |  208-227   | 164-181   | 129-140   | N/A       | 135-151   |
+| F1GP Bench 1 (CPU %) |  208-227   | 164-181   | 129-140   | 108-118   | 135-151   |
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